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CVE-2026-52491 (GCVE-0-2026-52491)
Vulnerability from cvelistv5 – Published: 2026-08-25 00:00 – Updated: 2026-08-31 15:57- n/a
- CWE-190 - Integer Overflow or Wraparound
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FKIE_CVE-2026-52491
Vulnerability from fkie_nvd - Published: 2026-08-25 21:17 - Updated: 2026-08-31 16:18| Vendor | Product | Version |
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GHSA-28V3-93MM-CCFV
Vulnerability from github – Published: 2026-08-25 21:31 – Updated: 2026-08-31 18:31An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code via the libtiff/tools/thumbnail.c: main() component
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RHSA-2026:53467
Vulnerability from csaf_redhat - Published: 2026-08-11 12:55 - Updated: 2026-09-02 15:02A flaw was found in libtiff. An attacker can exploit a vulnerability in the `process_command_opts()` function within `tools/tiffcrop.c` to execute arbitrary code. This could lead to a complete compromise of the affected system.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:libtiff-main@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libtiff-main@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libtiff-main@x86_64 | — |
Vendor Fix
fix
Workaround
|
A flaw was found in libtiff. An attacker could exploit this vulnerability by processing a specially crafted file, leading to arbitrary code execution. This issue occurs within the `thumbnail.c: main()` component. Successful exploitation could allow the attacker to take control of the affected system.
A flaw was found in libtiff. An integer overflow vulnerability exists in the `cvtRaster()` function of the `rgb2ycbcr` utility. When processing a specially crafted TIFF image during YCbCr conversion, an attacker could trigger an undersized heap allocation, leading to a heap-based buffer overflow. This could potentially allow for arbitrary code execution.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:libtiff-main@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libtiff-main@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libtiff-main@x86_64 | — |
Vendor Fix
fix
Workaround
|
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"url": "https://gist.github.com/okyfh/122c2d72e991a78c8af80a3af3be8671"
},
{
"category": "external",
"summary": "https://gitlab.com/libtiff/libtiff/-/work_items/846",
"url": "https://gitlab.com/libtiff/libtiff/-/work_items/846"
}
],
"release_date": "2026-08-24T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-08-11T12:55:57+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:libtiff-main@aarch64",
"Red Hat Hardened Images:libtiff-main@src",
"Red Hat Hardened Images:libtiff-main@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:53467"
},
{
"category": "workaround",
"details": "Avoid using the `tiffcrop` utility to process TIFF image files from untrusted sources. If the `libtiff-tools` package, which provides `tiffcrop`, is not required, consider removing it to prevent exploitation.",
"product_ids": [
"Red Hat Hardened Images:libtiff-main@aarch64",
"Red Hat Hardened Images:libtiff-main@src",
"Red Hat Hardened Images:libtiff-main@x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:libtiff-main@aarch64",
"Red Hat Hardened Images:libtiff-main@src",
"Red Hat Hardened Images:libtiff-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "libtiff: libtiff: Arbitrary code execution via process_command_opts() function"
},
{
"cve": "CVE-2026-52491",
"cwe": {
"id": "CWE-120",
"name": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
},
"discovery_date": "2026-08-25T21:21:51.091009+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2524131"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in libtiff. An attacker could exploit this vulnerability by processing a specially crafted file, leading to arbitrary code execution. This issue occurs within the `thumbnail.c: main()` component. Successful exploitation could allow the attacker to take control of the affected system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "libtiff: libtiff: Arbitrary code execution via thumbnail.c: main() component",
"title": "Vulnerability summary"
},
{
"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:libtiff-main@aarch64",
"Red Hat Hardened Images:libtiff-main@src",
"Red Hat Hardened Images:libtiff-main@x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-52491"
},
{
"category": "external",
"summary": "RHBZ#2524131",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2524131"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-52491",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-52491"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-52491",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52491"
},
{
"category": "external",
"summary": "https://gist.github.com/okyfh/5cc53fa67d229017231cf18c91768bd9",
"url": "https://gist.github.com/okyfh/5cc53fa67d229017231cf18c91768bd9"
},
{
"category": "external",
"summary": "https://gitlab.com/libtiff/libtiff/-/commit/9ce4d089bcf25496663776d9e6336738112f09a3",
"url": "https://gitlab.com/libtiff/libtiff/-/commit/9ce4d089bcf25496663776d9e6336738112f09a3"
}
],
"release_date": "2026-08-25T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-08-11T12:55:57+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:libtiff-main@aarch64",
"Red Hat Hardened Images:libtiff-main@src",
"Red Hat Hardened Images:libtiff-main@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:53467"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:libtiff-main@aarch64",
"Red Hat Hardened Images:libtiff-main@src",
"Red Hat Hardened Images:libtiff-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "libtiff: libtiff: Arbitrary code execution via thumbnail.c: main() component"
},
{
"cve": "CVE-2026-52492",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2026-08-24T20:41:11.373403+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2523134"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in libtiff. An integer overflow vulnerability exists in the `cvtRaster()` function of the `rgb2ycbcr` utility. When processing a specially crafted TIFF image during YCbCr conversion, an attacker could trigger an undersized heap allocation, leading to a heap-based buffer overflow. This could potentially allow for arbitrary code execution.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "libtiff: libtiff: Arbitrary code execution via crafted TIFF image",
"title": "Vulnerability summary"
},
{
"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:libtiff-main@aarch64",
"Red Hat Hardened Images:libtiff-main@src",
"Red Hat Hardened Images:libtiff-main@x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-52492"
},
{
"category": "external",
"summary": "RHBZ#2523134",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2523134"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-52492",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-52492"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-52492",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52492"
},
{
"category": "external",
"summary": "https://gist.github.com/okyfh/fbc5a37cade358361d80f6a498560cfa",
"url": "https://gist.github.com/okyfh/fbc5a37cade358361d80f6a498560cfa"
},
{
"category": "external",
"summary": "https://gitlab.com/libtiff/libtiff/-/commit/94affc5cf54111312f9891eb77accb93eebc28d7",
"url": "https://gitlab.com/libtiff/libtiff/-/commit/94affc5cf54111312f9891eb77accb93eebc28d7"
}
],
"release_date": "2026-08-24T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-08-11T12:55:57+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:libtiff-main@aarch64",
"Red Hat Hardened Images:libtiff-main@src",
"Red Hat Hardened Images:libtiff-main@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:53467"
},
{
"category": "workaround",
"details": "To mitigate this issue, avoid processing untrusted or maliciously crafted TIFF images with the rgb2ycbcr utility. Users should exercise caution when handling TIFF files from unknown or suspicious sources.",
"product_ids": [
"Red Hat Hardened Images:libtiff-main@aarch64",
"Red Hat Hardened Images:libtiff-main@src",
"Red Hat Hardened Images:libtiff-main@x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:libtiff-main@aarch64",
"Red Hat Hardened Images:libtiff-main@src",
"Red Hat Hardened Images:libtiff-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "libtiff: libtiff: Arbitrary code execution via crafted TIFF image"
}
]
}
ubuntu-cve-2026-52491
Vulnerability from osv_ubuntu
An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code via the libtiff/tools/thumbnail.c: main() component
| URL | Type | |
|---|---|---|
{
"affected": [
{
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{
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"binary_version": "1.10.1+dfsg-5ubuntu1+esm2"
},
{
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"binary_version": "1.10.1+dfsg-5ubuntu1+esm2"
},
{
"binary_name": "libgdal-perl",
"binary_version": "1.10.1+dfsg-5ubuntu1+esm2"
},
{
"binary_name": "libgdal1h",
"binary_version": "1.10.1+dfsg-5ubuntu1+esm2"
},
{
"binary_name": "python-gdal",
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},
{
"binary_name": "python3-gdal",
"binary_version": "1.10.1+dfsg-5ubuntu1+esm2"
}
]
},
"package": {
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"name": "gdal",
"purl": "pkg:deb/ubuntu/gdal@1.10.1+dfsg-5ubuntu1+esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
},
"ranges": [
{
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{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
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"1.9.0-3.1ubuntu6",
"1.10.1+dfsg-2",
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"1.10.1+dfsg-3",
"1.10.1+dfsg-3build1",
"1.10.1+dfsg-3build2",
"1.10.1+dfsg-3ubuntu1",
"1.10.1+dfsg-3ubuntu2",
"1.10.1+dfsg-5ubuntu1",
"1.10.1+dfsg-5ubuntu1+esm1",
"1.10.1+dfsg-5ubuntu1+esm2"
]
},
{
"ecosystem_specific": {
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{
"binary_name": "libtiff-opengl",
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},
{
"binary_name": "libtiff-tools",
"binary_version": "4.0.3-7ubuntu0.11+esm17"
},
{
"binary_name": "libtiff5",
"binary_version": "4.0.3-7ubuntu0.11+esm17"
},
{
"binary_name": "libtiffxx5",
"binary_version": "4.0.3-7ubuntu0.11+esm17"
}
]
},
"package": {
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"name": "tiff",
"purl": "pkg:deb/ubuntu/tiff@4.0.3-7ubuntu0.11+esm17?arch=source\u0026distro=esm-infra-legacy/trusty"
},
"ranges": [
{
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}
],
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}
],
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"4.0.3-7ubuntu0.9",
"4.0.3-7ubuntu0.10",
"4.0.3-7ubuntu0.11",
"4.0.3-7ubuntu0.11+esm1",
"4.0.3-7ubuntu0.11+esm2",
"4.0.3-7ubuntu0.11+esm3",
"4.0.3-7ubuntu0.11+esm4",
"4.0.3-7ubuntu0.11+esm5",
"4.0.3-7ubuntu0.11+esm6",
"4.0.3-7ubuntu0.11+esm7",
"4.0.3-7ubuntu0.11+esm8",
"4.0.3-7ubuntu0.11+esm9",
"4.0.3-7ubuntu0.11+esm10",
"4.0.3-7ubuntu0.11+esm11",
"4.0.3-7ubuntu0.11+esm12",
"4.0.3-7ubuntu0.11+esm13",
"4.0.3-7ubuntu0.11+esm14",
"4.0.3-7ubuntu0.11+esm15",
"4.0.3-7ubuntu0.11+esm16",
"4.0.3-7ubuntu0.11+esm17"
]
},
{
"ecosystem_specific": {
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{
"binary_name": "libtiff-opengl",
"binary_version": "4.0.6-1ubuntu0.8+esm20"
},
{
"binary_name": "libtiff-tools",
"binary_version": "4.0.6-1ubuntu0.8+esm20"
},
{
"binary_name": "libtiff5",
"binary_version": "4.0.6-1ubuntu0.8+esm20"
},
{
"binary_name": "libtiffxx5",
"binary_version": "4.0.6-1ubuntu0.8+esm20"
}
]
},
"package": {
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"name": "tiff",
"purl": "pkg:deb/ubuntu/tiff@4.0.6-1ubuntu0.8+esm20?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
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"4.0.5-1",
"4.0.6-1",
"4.0.6-1ubuntu0.1",
"4.0.6-1ubuntu0.2",
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"4.0.6-1ubuntu0.4",
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"4.0.6-1ubuntu0.7",
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"4.0.6-1ubuntu0.8+esm16",
"4.0.6-1ubuntu0.8+esm17",
"4.0.6-1ubuntu0.8+esm18",
"4.0.6-1ubuntu0.8+esm19",
"4.0.6-1ubuntu0.8+esm20"
]
},
{
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"binary_version": "1.11.3+dfsg-3ubuntu0.1~esm1"
},
{
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},
{
"binary_name": "libgdal-perl",
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},
{
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},
{
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},
{
"binary_name": "python3-gdal",
"binary_version": "1.11.3+dfsg-3ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "gdal",
"purl": "pkg:deb/ubuntu/gdal@1.11.3+dfsg-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps-legacy/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.11.2+dfsg-3ubuntu3",
"1.11.2+dfsg-3ubuntu4",
"1.11.3+dfsg-2build1",
"1.11.3+dfsg-2build2",
"1.11.3+dfsg-2build3",
"1.11.3+dfsg-3",
"1.11.3+dfsg-3build1",
"1.11.3+dfsg-3build2",
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]
},
{
"ecosystem_specific": {
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{
"binary_name": "libtiff-opengl",
"binary_version": "4.0.9-5ubuntu0.10+esm10"
},
{
"binary_name": "libtiff-tools",
"binary_version": "4.0.9-5ubuntu0.10+esm10"
},
{
"binary_name": "libtiff5",
"binary_version": "4.0.9-5ubuntu0.10+esm10"
},
{
"binary_name": "libtiffxx5",
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}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "tiff",
"purl": "pkg:deb/ubuntu/tiff@4.0.9-5ubuntu0.10+esm10?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
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{
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}
],
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}
],
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"4.0.9-3",
"4.0.9-4",
"4.0.9-4ubuntu1",
"4.0.9-5",
"4.0.9-5ubuntu0.1",
"4.0.9-5ubuntu0.2",
"4.0.9-5ubuntu0.3",
"4.0.9-5ubuntu0.4",
"4.0.9-5ubuntu0.5",
"4.0.9-5ubuntu0.6",
"4.0.9-5ubuntu0.7",
"4.0.9-5ubuntu0.8",
"4.0.9-5ubuntu0.9",
"4.0.9-5ubuntu0.10",
"4.0.9-5ubuntu0.10+esm1",
"4.0.9-5ubuntu0.10+esm2",
"4.0.9-5ubuntu0.10+esm3",
"4.0.9-5ubuntu0.10+esm4",
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"4.0.9-5ubuntu0.10+esm6",
"4.0.9-5ubuntu0.10+esm7",
"4.0.9-5ubuntu0.10+esm8",
"4.0.9-5ubuntu0.10+esm9",
"4.0.9-5ubuntu0.10+esm10"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "neuron",
"binary_version": "7.5-1"
},
{
"binary_name": "python3-neuron",
"binary_version": "7.5-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "neuron",
"purl": "pkg:deb/ubuntu/neuron@7.5-1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
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}
],
"type": "ECOSYSTEM"
}
],
"versions": [
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]
},
{
"ecosystem_specific": {
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{
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},
{
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},
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}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.15.19+dfsg2-1",
"5.15.19+dfsg2-1build1",
"5.15.19+dfsg2-2",
"5.15.19+dfsg2-3",
"5.15.19+dfsg2-4",
"5.15.19+dfsg2-4ubuntu0.1~esm1"
]
}
],
"aliases": [],
"details": "An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code via the libtiff/tools/thumbnail.c: main() component",
"id": "UBUNTU-CVE-2026-52491",
"modified": "2026-09-02T16:18:23Z",
"published": "2026-08-25T21:17:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-52491"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-52491"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-52491"
]
}
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.
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.