CVE-2026-20889

CRITICAL 9.8

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-190
Vendor	libraw
Product	libraw
Published	Apr 7, 2026
Last Updated	Apr 8, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

LibRaw / LibRaw

Commit d20315b

References

NVD ↗ CVE.org ↗ EPSS Data ↗

talosintelligence.com: https://talosintelligence.com/vulnerability_reports/TALOS-2026-2358 talosintelligence.com: https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2358

Credits

Discovered by Francesco Benvenuto of Cisco Talos.