What is CVE-2022-34480?

CVE-2022-34480 is a high-severity vulnerability in Mozilla Firefox, classified under Access of Uninitialized Pointer. CVSS score: 8.8/10. Published 2022-12-22.

How severe is CVE-2022-34480?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2022-34480 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Mozilla Firefox

CVE-2022-34480

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: 0.005 (41.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Mozilla Firefox — versions unspecified

Weakness classification (CWE)

CWE-824 — Access of Uninitialized Pointer

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

security@mozilla.org (Vendor Advisory)
security@mozilla.org (Permissions Required, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2022-34480?: CVE-2022-34480 is a high-severity vulnerability in Mozilla Firefox, classified under Access of Uninitialized Pointer. CVSS score: 8.8/10. Published 2022-12-22.
How severe is CVE-2022-34480?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2022-34480 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.