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HIGH · 7.8

CVE-2026-4775

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. Th...

Vulnerability 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.

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
LibtiffLibtiff-
RedhatHardened Images-
DebianDebian Linux11.0
RedhatEnterprise Linux6.0

Related Weaknesses (CWE)

CWE-190

References

FAQ

What is CVE-2026-4775?

CVE-2026-4775 is a vulnerability with a CVSS score of 7.8 (HIGH). 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. Th...

How severe is CVE-2026-4775?

CVE-2026-4775 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-4775?

Check the references section above for vendor advisories and patch information. Affected products include: Libtiff Libtiff, Redhat Hardened Images, Debian Debian Linux, Redhat Enterprise Linux.