CVE-2026-4775
HIGH severity · CVSS 7.8 · Integer overflow
7.8CVSS HIGH
Summary
A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerability in the putcontig8bitYCbCr44tile function by providing a specially crafted TIFF file. This flaw can lead to an out-of-bounds heap write due to incorrect memory pointer calculations, potentially causing a denial of service (application crash) or arbitrary code execution.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)1%
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://access.redhat.com/errata/RHSA-2026:12265
- https://access.redhat.com/errata/RHSA-2026:12271
- https://access.redhat.com/errata/RHSA-2026:14929
- https://access.redhat.com/errata/RHSA-2026:16055
- https://access.redhat.com/errata/RHSA-2026:19150
- https://access.redhat.com/errata/RHSA-2026:19363
- https://access.redhat.com/errata/RHSA-2026:19585
- https://access.redhat.com/errata/RHSA-2026:19586