CVE-2023-4582

Name: CVE-2023-4582
Creator: NVD / NIST
Published: 2023-09-11T09:15:09.617+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.76%

Last modified Jun 17, 2026

CVE-2023-4582 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Due to large allocation checks in Angle for glsl shaders being too lenient a buffer overflow could have occurred when allocating too much private shader memory on mac OS. *This bug only affects Firefox on macOS. EPSS estimates a 0.76% chance of exploitation in the next 30 days.

Description

Due to large allocation checks in Angle for glsl shaders being too lenient a buffer overflow could have occurred when allocating too much private shader memory on mac OS. *This bug only affects Firefox on macOS. Other operating systems are unaffected.* This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.76%

50.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 117.0
Mozilla	Firefox Esr	< 115.2
Mozilla	Thunderbird	< 115.2

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1773874Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2023-34/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-36/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-38/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1773874Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2023-34/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-36/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-38/Vendor Advisory

Timeline

Published: Sep 11, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-4582?

How severe is CVE-2023-4582?

CVE-2023-4582 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.76% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4582?

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-2023-4582?

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

Scan your code now

Source: NVD / NIST