What’s Vulnerable › Vulnerabilities

CVE-2025-12474: libjxl: Uninitialized memory read in decoder due to incorrect optimization in patch handling

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-11 · updated 2026-06-17
• Weakness: CWE-908

Description

A specially-crafted file can cause libjxl's decoder to read pixel data from uninitialized (but allocated) memory. This can be done by causing the decoder to reference an outside-image-bound area in a subsequent patches. An incorrect optimization causes the decoder to omit populating those areas.

Affected products

• libjxl: from 0.7.0 through 0.11.1

References

• https://github.com/libjxl/libjxl/pull/4495

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