High [CVE-2026-52491] Arbitrary code execution via thumbnail.c: main component
This high-severity Red Hat Linux advisory covers CVE-2026-52491 affecting Red Hat Hardened Images, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
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Summary
An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code via the libtiff/tools/thumbnail.c: main() component A flaw was found in libtiff. An attacker could exploit this vulnerability by processing a specially crafted file, leading to arbitrary code execution.
Successful exploitation could allow the attacker to take control of the affected system. Red Hat severity: Important — CVSS 7.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).
Weakness: CWE-120. Affected Red Hat products: Red Hat Hardened Images; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7.
Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9 as not affected. Will not fix / out of support: Red Hat Enterprise Linux 6.
Red Hat fixing advisory: RHSA-2026:53467.
Affected products named by the advisory: Red Hat package: libtiff.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
- libtiff-main-4.7.2-2.hum1
- RHSA-2026:53467
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Mitigation
Upgrade to a fixed release: libtiff-main-4.7.2-2.hum1, RHSA-2026:53467. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
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