CVE-2022-34480

Name: CVE-2022-34480
Creator: NVD / NIST
Published: 2022-12-22T20:15:33.287+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.54%

Last modified Jun 17, 2026

CVE-2022-34480 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Within the <code>lg_init()</code> function, if several allocations succeed but then one fails, an uninitialized pointer would have been freed despite never being allocated. This vulnerability affects Firefox < 102.. EPSS estimates a 0.54% chance of exploitation in the next 30 days.

Description

Within the <code>lg_init()</code> function, if several allocations succeed but then one fails, an uninitialized pointer would have been freed despite never being allocated. This vulnerability affects Firefox < 102.

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

0.54%

41.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 102.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1454072Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-24/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1454072Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-24/Vendor Advisory

Timeline

Published: Dec 22, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-34480?

How severe is CVE-2022-34480?

CVE-2022-34480 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.54% probability of exploitation in the next 30 days.

How do I fix CVE-2022-34480?

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-2022-34480?

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

Scan your code now

Source: NVD / NIST