CVE-2026-20889CWE-190

A heap-based buffer overflow vulnerability exists in the x3f_thumb_loader functionality of LibRaw Commit d20315b

Critical · published April 7, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
56.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00805 · 56.3th percentile
Weakness
CWE-190 · Integer Overflow or Wraparound
Published
2026-04-07T13:49Z
EPSS history
Timeline
  • 07 APR 13:49Z
    A heap-based buffer overflow vulnerability exists in the x3f_thumb_loader functionality of LibRaw Commit d20315b
    cvelistv5