CVE-2025-4087

Description

A vulnerability was identified in Firefox where XPath parsing could trigger undefined behavior due to missing null checks during attribute access. This could lead to out-of-bounds read access and potentially, memory corruption. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Thunderbird < 138, and Thunderbird ESR < 128.10.

References

https://www.mozilla.org/security/advisories/mfsa2025-32/

https://www.mozilla.org/security/advisories/mfsa2025-31/

https://www.mozilla.org/security/advisories/mfsa2025-29/

https://www.mozilla.org/security/advisories/mfsa2025-28/

https://bugzilla.mozilla.org/show_bug.cgi?id=1952465

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3