Is CVE-2026-4775 actively exploited?

CVE-2026-4775 has no public evidence of in-the-wild exploitation as of 2026-04-21.

What is the CVSS score for CVE-2026-4775?

CVE-2026-4775 has a CVSS score of 7.8 (HIGH severity). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

How do I patch CVE-2026-4775?

Patch guidance is available from libtiff security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-4775.

Fix CVE-2026-4775 - HIGH libtiff libtiff

Q: Which products are affected by CVE-2026-4775?

8 products: libtiff libtiff, redhat hardened images, debian debian linux, redhat enterprise linux, redhat enterprise linux, and 3 more.

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 Metrics

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector: local
Complexity: low
Privileges: none
User Action: required
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-190 · Integer Overflow

Metadata

Primary Vendor: LIBTIFF
Published: 3/24/2026
Last Modified: 4/21/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

libtiff : libtiffredhat : hardened_imagesdebian : debian_linuxredhat : enterprise_linuxredhat : enterprise_linuxredhat : enterprise_linuxredhat : enterprise_linuxredhat : enterprise_linux

Remediation Guidance

Executive Summary

View on NIST NVD