RHSA-2026:35387
Vulnerability from csaf_redhat - Published: 2026-07-03 09:43 - Updated: 2026-09-10 17:22Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs:
vim:
* vim-X11-9.2.780-1.hum1 (aarch64, x86_64)
* vim-common-9.2.780-1.hum1 (aarch64, x86_64)
* vim-data-9.2.780-1.hum1 (noarch)
* vim-default-editor-9.2.780-1.hum1 (noarch)
* vim-enhanced-9.2.780-1.hum1 (aarch64, x86_64)
* vim-filesystem-9.2.780-1.hum1 (noarch)
* vim-minimal-9.2.780-1.hum1 (aarch64, x86_64)
* xxd-9.2.780-1.hum1 (aarch64, x86_64)
* vim-9.2.780-1.hum1.src (src)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in Vim, an open-source command-line text editor. A remote attacker could exploit this vulnerability by convincing a user to load a specially crafted spell file. This malicious file can trigger a stack out-of-bounds write, which corrupts the editor's memory and causes it to crash. This leads to a Denial of Service (DoS), making the editor unavailable to the user.
5.5 (Medium)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:vim-main@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:vim-main@noarch | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:vim-main@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:vim-main@x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
There is a security flaw in Vim. If you use Vim to open a malicious file written by a hacker, and you use the auto-complete feature while typing, the file can secretly force your computer to run unauthorized commands or malware.
7.8 (High)
Affected products
Fixed
4 products, the same list as for
CVE-2026-55892
Threats
Impact
Important
A flaw was found in Vim, an open-source command-line text editor. The PHP omni-completion script improperly handles specially crafted input. When a victim opens a malicious PHP file and invokes omni-completion, an unescaped class or trait name can be interpreted as Ex commands. This allows a remote attacker to achieve arbitrary operating-system command execution.
5.3 (Medium)
Affected products
Fixed
4 products, the same list as for
CVE-2026-55892
Threats
Impact
Moderate
An out-of-bounds write vulnerability in Vim's spell_soundfold_sal() function allows an attacker to corrupt memory and crash the editor (Denial of Service) by supplying a specially crafted word during spell sound-folding.
5.5 (Medium)
Affected products
Fixed
4 products, the same list as for
CVE-2026-55892
Threats
Impact
Moderate
A command injection vulnerability in Vim's C omni-completion script allows an attacker to execute arbitrary commands if a user is tricked into opening a maliciously crafted tags file and manually invoking the autocomplete feature.
6.5 (Medium)
Affected products
Fixed
4 products, the same list as for
CVE-2026-55892
Threats
Impact
Moderate
References
41 references
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"title": "Vulnerability description"
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"text": "vim: Vim: Denial of Service via crafted spell file",
"title": "Vulnerability summary"
},
{
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"text": "A flaw was found in Vim\u0027s spell file handling. The dump_prefixes() function in src/spell.c does not validate the depth of the prefix trie against the size of fixed-size stack arrays, allowing a crafted .spl file to cause a stack out-of-bounds write and crash. Red Hat ships Vim in all RHEL versions and OpenShift CoreOS. Exploitation requires a user to load a malicious spell file and run :spelldump or spelling completion.",
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"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
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"details": "Moderate"
}
],
"title": "vim: Vim: Denial of Service via crafted spell file"
},
{
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"name": "Improper Control of Generation of Code (\u0027Code Injection\u0027)"
},
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"ids": [
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"notes": [
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"category": "description",
"text": "There is a security flaw in Vim. If you use Vim to open a malicious file written by a hacker, and you use the auto-complete feature while typing, the file can secretly force your computer to run unauthorized commands or malware.",
"title": "Vulnerability description"
},
{
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"text": "vim: Vim: Arbitrary code execution via malicious docstrings in Python omni-completion",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This flaw is rated as Important. A vulnerability in Vim\u0027s Python omni-completion feature allows for arbitrary code execution. By opening a specially crafted file, a local attacker could execute arbitrary Python code due to improper handling of docstrings during omni-completion, leading to a compromise of the system where Vim is running.",
"title": "Statement"
},
{
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"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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"details": "To mitigate this vulnerability, users should avoid opening untrusted Python files or using Python omni-completion on such files. If Python omni-completion is not required, it can be disabled by adding `autocmd FileType python setlocal omnifunc=` to your `.vimrc` file. This will prevent the vulnerable code from being executed. Disabling Python omni-completion will remove the ability to use `Ctrl-X Ctrl-O` for Python code completion. A restart of Vim is required for the changes to take effect.",
"product_ids": [
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"scores": [
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"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:vim-main@aarch64",
"Red Hat Hardened Images:vim-main@noarch",
"Red Hat Hardened Images:vim-main@src",
"Red Hat Hardened Images:vim-main@x86_64"
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "vim: Vim: Arbitrary code execution via malicious docstrings in Python omni-completion"
},
{
"cve": "CVE-2026-59856",
"cwe": {
"id": "CWE-94",
"name": "Improper Control of Generation of Code (\u0027Code Injection\u0027)"
},
"discovery_date": "2026-07-09T23:01:40.406872+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2498867"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Vim, an open-source command-line text editor. The PHP omni-completion script improperly handles specially crafted input. When a victim opens a malicious PHP file and invokes omni-completion, an unescaped class or trait name can be interpreted as Ex commands. This allows a remote attacker to achieve arbitrary operating-system command execution.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "vim: Vim: Arbitrary code execution via crafted PHP file in omni-completion",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security has rated this vulnerability as having a Moderate impact. While successful exploitation allows for arbitrary operating-system command execution when a user opens a crafted PHP file and triggers omni-completion, this feature is disabled by default in Red Hat products. The requirement for a non-default configuration, combined with mandatory user interaction, significantly reduces the real-world risk.\"",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"Red Hat Hardened Images:vim-main@aarch64",
"Red Hat Hardened Images:vim-main@noarch",
"Red Hat Hardened Images:vim-main@src",
"Red Hat Hardened Images:vim-main@x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-59856"
},
{
"category": "external",
"summary": "RHBZ#2498867",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2498867"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-59856",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-59856"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-59856",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59856"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/commit/43afc581a37a35762dd0ef292f038b9dc5680a24",
"url": "https://github.com/vim/vim/commit/43afc581a37a35762dd0ef292f038b9dc5680a24"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/security/advisories/GHSA-fh26-8f79-wj97",
"url": "https://github.com/vim/vim/security/advisories/GHSA-fh26-8f79-wj97"
}
],
"release_date": "2026-07-09T22:39:01.803000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-07-03T09:43:18+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
"product_ids": [
"Red Hat Hardened Images:vim-main@aarch64",
"Red Hat Hardened Images:vim-main@noarch",
"Red Hat Hardened Images:vim-main@src",
"Red Hat Hardened Images:vim-main@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:35387"
},
{
"category": "workaround",
"details": "Users should exercise caution when opening untrusted PHP files and avoid invoking omni-completion on them. To prevent exploitation, the PHP omni-completion script can be disabled by moving or renaming `phpcomplete.vim`. For example, execute `mv /usr/share/vim/vim*/autoload/phpcomplete.vim /usr/share/vim/vim*/autoload/phpcomplete.vim.bak`. This action will disable PHP omni-completion functionality. A restart of Vim is necessary for this change to take effect.",
"product_ids": [
"Red Hat Hardened Images:vim-main@aarch64",
"Red Hat Hardened Images:vim-main@noarch",
"Red Hat Hardened Images:vim-main@src",
"Red Hat Hardened Images:vim-main@x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:vim-main@aarch64",
"Red Hat Hardened Images:vim-main@noarch",
"Red Hat Hardened Images:vim-main@src",
"Red Hat Hardened Images:vim-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "vim: Vim: Arbitrary code execution via crafted PHP file in omni-completion"
},
{
"cve": "CVE-2026-59857",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2026-07-09T23:01:27.257331+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2498863"
}
],
"notes": [
{
"category": "description",
"text": "An out-of-bounds write vulnerability in Vim\u0027s spell_soundfold_sal() function allows an attacker to corrupt memory and crash the editor (Denial of Service) by supplying a specially crafted word during spell sound-folding.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "vim: Vim: Denial of Service via out-of-bounds write in spell sound-folding",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This Moderate impact flaw in Vim\u0027s spell sound-folding feature can lead to a denial of service. A local attacker could provide a specially crafted word, causing an out-of-bounds write and crashing the editor. This vulnerability primarily affects interactive users of the Vim text editor.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"Red Hat Hardened Images:vim-main@aarch64",
"Red Hat Hardened Images:vim-main@noarch",
"Red Hat Hardened Images:vim-main@src",
"Red Hat Hardened Images:vim-main@x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-59857"
},
{
"category": "external",
"summary": "RHBZ#2498863",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2498863"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-59857",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-59857"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-59857",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59857"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/commit/d22ff1c955ff87e8273210eae125aab0e85b6c30",
"url": "https://github.com/vim/vim/commit/d22ff1c955ff87e8273210eae125aab0e85b6c30"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/security/advisories/GHSA-m3hf-xcm3-xhm2",
"url": "https://github.com/vim/vim/security/advisories/GHSA-m3hf-xcm3-xhm2"
}
],
"release_date": "2026-07-09T22:34:54.698000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-07-03T09:43:18+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
"product_ids": [
"Red Hat Hardened Images:vim-main@aarch64",
"Red Hat Hardened Images:vim-main@noarch",
"Red Hat Hardened Images:vim-main@src",
"Red Hat Hardened Images:vim-main@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:35387"
},
{
"category": "workaround",
"details": "This vulnerability can be mitigated by preventing Vim from automatically applying editor configurations embedded in files.\nAdd the following line to the global /etc/vimrc or local ~/.vimrc configuration file:\nset nomodeline",
"product_ids": [
"Red Hat Hardened Images:vim-main@aarch64",
"Red Hat Hardened Images:vim-main@noarch",
"Red Hat Hardened Images:vim-main@src",
"Red Hat Hardened Images:vim-main@x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:vim-main@aarch64",
"Red Hat Hardened Images:vim-main@noarch",
"Red Hat Hardened Images:vim-main@src",
"Red Hat Hardened Images:vim-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "vim: Vim: Denial of Service via out-of-bounds write in spell sound-folding"
},
{
"cve": "CVE-2026-59858",
"cwe": {
"id": "CWE-94",
"name": "Improper Control of Generation of Code (\u0027Code Injection\u0027)"
},
"discovery_date": "2026-07-09T23:01:43.278752+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2498868"
}
],
"notes": [
{
"category": "description",
"text": "A command injection vulnerability in Vim\u0027s C omni-completion script allows an attacker to execute arbitrary commands if a user is tricked into opening a maliciously crafted tags file and manually invoking the autocomplete feature.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "vim: Vim: Arbitrary command execution via crafted tags file in C omni-completion",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This Moderate flaw in Vim\u0027s C omni-completion script allows for arbitrary command execution. Exploitation requires a user to open a specially crafted C source file along with a malicious project tags file and then invoke C omni-completion. This limits the attack vector as it relies on specific user interaction and the presence of a hostile tags file, making it less likely to be exploited without user awareness.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"Red Hat Hardened Images:vim-main@aarch64",
"Red Hat Hardened Images:vim-main@noarch",
"Red Hat Hardened Images:vim-main@src",
"Red Hat Hardened Images:vim-main@x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-59858"
},
{
"category": "external",
"summary": "RHBZ#2498868",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2498868"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-59858",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-59858"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-59858",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59858"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/commit/6b611b0d15603c52ebdad17172b0232b4f65704e",
"url": "https://github.com/vim/vim/commit/6b611b0d15603c52ebdad17172b0232b4f65704e"
},
{
"category": "external",
"summary": "https://github.com/vim/vim/security/advisories/GHSA-mf92-v4xw-j45x",
"url": "https://github.com/vim/vim/security/advisories/GHSA-mf92-v4xw-j45x"
}
],
"release_date": "2026-07-09T22:37:52.789000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-07-03T09:43:18+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
"product_ids": [
"Red Hat Hardened Images:vim-main@aarch64",
"Red Hat Hardened Images:vim-main@noarch",
"Red Hat Hardened Images:vim-main@src",
"Red Hat Hardened Images:vim-main@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:35387"
},
{
"category": "workaround",
"details": "Users are advised to avoid opening untrusted C source files or project tags files in Vim. Exercising caution and only processing trusted content prevents exploitation.",
"product_ids": [
"Red Hat Hardened Images:vim-main@aarch64",
"Red Hat Hardened Images:vim-main@noarch",
"Red Hat Hardened Images:vim-main@src",
"Red Hat Hardened Images:vim-main@x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:vim-main@aarch64",
"Red Hat Hardened Images:vim-main@noarch",
"Red Hat Hardened Images:vim-main@src",
"Red Hat Hardened Images:vim-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "vim: Vim: Arbitrary command execution via crafted tags file in C omni-completion"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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