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CVE-2026-20889

CRITICAL CVSS 3.1: 9.8 EPSS 0.05%
Updated Apr 10, 2026
Libraw
Parameter Value
CVSS 9.8 (CRITICAL)
Type CWE-190 (Integer Overflow)
Vendor Libraw
Public PoC No

A heap-based buffer overflow vulnerability exists in the x3f_thumb_loader functionality of LibRaw Commit d20315b. A specially crafted malicious file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Libraw Libraw
cpe:2.3:a:libraw:libraw:0.22.0:*:*:*:*:*:*:*