Description
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.
Affected products
libtiff: libtiff; debian: debian linux; redhat: ai inference server; redhat: codeready linux builder; redhat: codeready linux builder eus; redhat: hardened images; redhat: openshift ai; redhat: enterprise linux; redhat: enterprise linux els; redhat: enterprise linux eus; redhat: enterprise linux server aus; redhat: enterprise linux server tus; redhat: enterprise linux update services for sap solutions
References10
- access.redhat.com/errata/RHSA-2026:12265 Vendor Advisory
- access.redhat.com/errata/RHSA-2026:12271 Vendor Advisory
- access.redhat.com/errata/RHSA-2026:14929 Vendor Advisory
- access.redhat.com/errata/RHSA-2026:16055 Vendor Advisory
- access.redhat.com/errata/RHSA-2026:19150 Vendor Advisory
- access.redhat.com/errata/RHSA-2026:19363 Vendor Advisory
- access.redhat.com/errata/RHSA-2026:19585 Vendor Advisory
- access.redhat.com/errata/RHSA-2026:19586 Vendor Advisory
- access.redhat.com/errata/RHSA-2026:19604 Vendor Advisory
- access.redhat.com/errata/RHSA-2026:19608 Vendor Advisory
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 48 · as of 12 November 2026
- CWE
- CWE-190
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.