CVE-2023-29543

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-06-02 · updated 2026-08-19
Weakness: CWE-416

Description

An attacker could have caused memory corruption and a potentially exploitable use-after-free of a pointer in a global object's debugger vector. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.

Affected products

Mozilla Firefox: before 112.0 — fixed in 112.0
Mozilla Firefox for Android: before 112.0 — fixed in 112.0
Mozilla Focus: before 112.0 — fixed in 112.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 112.0; Mozilla Firefox for Android 112.0; Mozilla Focus 112.0. Check the vendor advisory for mitigations.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1816158
https://www.mozilla.org/security/advisories/mfsa2023-13/
https://bugzilla.mozilla.org/show_bug.cgi?id=1816158
https://www.mozilla.org/security/advisories/mfsa2023-13/

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