Vulnerability Report

CVE-2026-4775

Title: libtiff signed integer overflow RCE/DoS

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2026-4775.

CWE Category CWE-190

Published Date Mar 24, 2026

Modified Date May 26, 2026

Exploit Status Not Found

Score 7.8 CVSS v3.1

Exploit Probability (EPSS)

0.03%

Vulnerability Summary

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. 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.

Impacted Vendors

redhat 1

libtiff 1

simplesystems 1

Reference Links

https://access.redhat.com/security/cve/CVE-2026-4775 https://bugzilla.redhat.com/show_bug.cgi?id=2450768

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.8

Attack Vector

LOCAL

Complexity

LOW

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns