CVE-2026-12912
CVE-2026-12912 is a high-severity vulnerability with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-122.
Key facts
- Severity: High (CVSS 3.x base score 7.3)
- EPSS exploit prediction: 0% (14th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-122
- Published:
- Last modified:
Description
A flaw was found in libtiff. A remote attacker could exploit this vulnerability by providing a specially crafted PixarLog-compressed TIFF image. This issue occurs when decoding Pixarlog codec images with the PIXARLOGDATAFMT_8BITABGR output format and a specific stride value, leading to a heap-based buffer overflow. This could potentially result in arbitrary code execution or a denial of service (DoS).
Frequently asked questions
- What is CVE-2026-12912?
- A flaw was found in libtiff. A remote attacker could exploit this vulnerability by providing a specially crafted PixarLog-compressed TIFF image. This issue occurs when decoding Pixarlog codec images with the PIXARLOGDATAFMT_8BITABGR output format and a specific stride value, leading to a heap-based buffer overflow. This could potentially result in arbitrary code execution or a denial of service (DoS).
- How severe is CVE-2026-12912?
- CVE-2026-12912 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-12912 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-12912?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-12912 published?
- CVE-2026-12912 was published on 2026-06-29 and last updated on 2026-07-03.
References
- https://access.redhat.com/errata/RHSA-2026:34890
- https://access.redhat.com/security/cve/CVE-2026-12912
- https://bugzilla.redhat.com/show_bug.cgi?id=2492871
- https://gitlab.com/libtiff/libtiff/-/merge_requests/873
- https://gitlab.com/libtiff/libtiff/-/work_items/824
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12912.json
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