CVE-2023-29531

Name: CVE-2023-29531
Creator: NVD / NIST
Published: 2023-06-19T10:15:09.373+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.97%

Last modified Jun 17, 2026

CVE-2023-29531 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An attacker could have caused an out of bounds memory access using WebGL APIs, leading to memory corruption and a potentially exploitable crash. *This bug only affects Firefox and Thunderbird for macOS. Other operating systems are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10. . EPSS estimates a 0.97% chance of exploitation in the next 30 days.

Description

An attacker could have caused an out of bounds memory access using WebGL APIs, leading to memory corruption and a potentially exploitable crash. *This bug only affects Firefox and Thunderbird for macOS. Other operating systems are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.97%

57.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 112.0
Mozilla	Firefox Esr	< 102.10
Mozilla	Thunderbird	< 102.10

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1794292Permissions Required
https://www.mozilla.org/security/advisories/mfsa2023-13/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-14/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-15/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1794292Permissions Required
https://www.mozilla.org/security/advisories/mfsa2023-13/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-14/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-15/Vendor Advisory

Timeline

Published: Jun 19, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-29531?

How severe is CVE-2023-29531?

CVE-2023-29531 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.97% probability of exploitation in the next 30 days.

How do I fix CVE-2023-29531?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-29531?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST