CVE-2026-40494CRITICAL 9.8EPSS p23.0%

CVE-2026-40494CVE-2026-40494

Description

SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles. Prior to commit 45d48d1f2e8e0d73e80bc1fd5310cb57f4547302, the TGA codec's RLE decoder in `tga.c` has an asymmetric bounds check vulnerability. The run-packet path (line 297) correctly clamps the repeat count to the remaining buffer space, but the raw-packet path (line 305-311) has no equivalent bounds check. This allows writing up to 496 bytes of attacker-controlled data past the end of a heap buffer. Commit 45d48d1f2e8e0d73e80bc1fd5310cb57f4547302 patches the issue.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.31% probability of exploitation · percentile 23.0% · 2026-06-19T12:03:05Z
Published2026-04-18
Last modified2026-04-20

Underlying weaknesses· 1

CWE-787

References

  1. https://github.com/HappySeaFox/sail/commit/45d48d1f2e8e0d73e80bc1fd5310cb57f4547302
  2. https://github.com/HappySeaFox/sail/security/advisories/GHSA-cp2j-rwh4-r46f

1

TypeTargetConfidenceTier
WeaknessOut-of-bounds Writecwe-7870%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.