What’s Vulnerable › Vulnerabilities

CVE-2021-27804

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-02 · updated 2026-06-17
• Weakness: CWE-787

Description

JPEG XL (aka jpeg-xl) through 0.3.2 allows writable memory corruption.

Affected products

• libjxl: through 0.3.2

References

• http://packetstormsecurity.com/files/161623/jpeg-xl-0.3.1-Memory-Corruption.html
• http://seclists.org/fulldisclosure/2021/Mar/2
• http://www.openwall.com/lists/oss-security/2021/03/01/3
• https://gitlab.com/wg1/jpeg-xl/-/tags
• http://packetstormsecurity.com/files/161623/jpeg-xl-0.3.1-Memory-Corruption.html
• http://seclists.org/fulldisclosure/2021/Mar/2
• http://www.openwall.com/lists/oss-security/2021/03/01/3
• https://gitlab.com/wg1/jpeg-xl/-/tags

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