RHSA-2026:35387
Vulnerability from csaf_redhat - Published: 2026-07-03 09:43 - Updated: 2026-07-07 18:58Summary
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
| 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
Important
References
20 references
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"notes": [
{
"category": "description",
"text": "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\u0027s memory and causes it to crash. This leads to a Denial of Service (DoS), making the editor unavailable to the user.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "vim: Vim: Denial of Service via crafted spell file",
"title": "Vulnerability summary"
},
{
"category": "other",
"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.",
"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.",
"title": "CVSS score applicability"
}
],
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"Red Hat Hardened Images:vim-main@src",
"Red Hat Hardened Images:vim-main@x86_64"
]
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"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"
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"details": "Do not load untrusted spell files (.spl) from unknown sources. Avoid using :spelldump with spell files of unknown provenance.",
"product_ids": [
"Red Hat Hardened Images:vim-main@aarch64",
"Red Hat Hardened Images:vim-main@noarch",
"Red Hat Hardened Images:vim-main@src",
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"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"
},
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"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": "Moderate"
}
],
"title": "vim: Vim: Denial of Service via crafted spell file"
},
{
"cve": "CVE-2026-57456",
"cwe": {
"id": "CWE-94",
"name": "Improper Control of Generation of Code (\u0027Code Injection\u0027)"
},
"discovery_date": "2026-06-25T16:01:37.648886+00:00",
"ids": [
{
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"text": "2492972"
}
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"notes": [
{
"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"
},
{
"category": "summary",
"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"
},
{
"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": {
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"Red Hat Hardened Images:vim-main@noarch",
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"Red Hat Hardened Images:vim-main@x86_64"
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57456"
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"url": "https://github.com/vim/vim/commit/cce141c42740f122dd8486ae04e21c2a81016ba8"
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"url": "https://github.com/vim/vim/releases/tag/v9.2.0699"
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{
"category": "external",
"summary": "https://github.com/vim/vim/security/advisories/GHSA-ppj8-wqjf-6fp3",
"url": "https://github.com/vim/vim/security/advisories/GHSA-ppj8-wqjf-6fp3"
}
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"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"
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"restart_required": {
"category": "none"
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"url": "https://access.redhat.com/errata/RHSA-2026:35387"
},
{
"category": "workaround",
"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": [
"Red Hat Hardened Images:vim-main@aarch64",
"Red Hat Hardened Images:vim-main@noarch",
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"Red Hat Hardened Images:vim-main@x86_64"
]
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],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"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"
}
]
}
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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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