# CVE-2026-40494

> Vulnerability · severity: **CRITICAL** (CVSS 9.8).

## 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.

## Key facts

- **CVE ID:** CVE-2026-40494
- **Published:** 2026-04-18
- **CVSS severity:** CRITICAL
- **CVSS base score:** 9.8
- **CWE codes:** CWE-787

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40494

## Citation

> AI Analytics. CVE-2026-40494. Retrieved 2026-07-20 from https://api.ai-analytics.org/cve/CVE-2026-40494. Derived from NIST NVD. Licensed CC0.

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