CVE-2026-20889

CRITICAL

LibRaw Commit d20315b - Heap-Based Buffer Overflow in x3f_thumb_loader

Title source: llm

Description

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.

References (9)

Core 9

Core References

Third Party Advisory

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

Vendor Advisory

https://access.redhat.com/errata/RHSA-2026:13284

Vendor Advisory

https://access.redhat.com/errata/RHSA-2026:14224

Vendor Advisory

https://access.redhat.com/errata/RHSA-2026:14655

Vendor Advisory

https://access.redhat.com/errata/RHSA-2026:14673

Vendor Advisory

https://access.redhat.com/security/cve/CVE-2026-20889

Vendor Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=2455942

Vendor Advisory

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20889.json

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

Scores

CVSS v3 9.8

EPSS 0.0065

EPSS Percentile 47.3%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact total

Details

CWE

CWE-120 CWE-190

Status published

Products (2)

libraw/libraw 0.22.0

LibRaw/LibRaw Commit d20315b

Published Apr 07, 2026

Tracked Since Apr 07, 2026