8.8

CVE-2022-34484: mozilla firefox Use After Free

CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2022-34484DEBIAN-CVE-2022-34484
Published 22-12-2022Last modified 15-04-2025
Open JSON

Vulnerability summary

CVE-2022-34484 is a high (CVSS 8.8) Use After Free vulnerability in mozilla firefox. EPSS estimates a 0.98% chance of exploitation in the next 30 days, higher than 61.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
45/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.98%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 30 · Related 13
DLA-3064-1DSA-5172-1DSA-5175-1MGASA-2022-0251MGASA-2022-0253OPENSUSE-SU-2024:12161-1

Timeline

  1. 22-12-2022
    PublishedVulnerability first disclosed.
  2. 15-04-2025
    Last modifiedVulnerability information updated.

Description

The Mozilla Fuzzing Team reported potential vulnerabilities present in Thunderbird 91.10. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.98%

Chance of exploitation in the next 30 days

Percentile

62%

Versus all other CVEs

30-day change

0.00 pp

From 0.98% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.98%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugzilla.mozilla.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Ubuntu7 products
  • firefox< 102.0+build2-0ubuntu0.18.04.1 | < 102.0+build2-0ubuntu0.20.04.1
  • mozjs38All versions (No fix recorded)
  • mozjs52All versions (No fix recorded)
  • mozjs68All versions (No fix recorded)
  • mozjs78All versions (No fix recorded)
Mozilla3 products
  • firefox≥ unspecified, < 102 | < 102.0
  • firefox_esr≥ unspecified, < 91.11 | < 91.11
  • thunderbird≥ unspecified, < 102 | ≥ unspecified, < 91.11 | < 91.11
Debian2 products
  • firefox-esr< 91.11.0esr-1
  • thunderbird< 1:91.11.0-1

3 vendors · 12 products

References

10 links