6.5

CVE-2022-1196: mozilla firefox esr Use After Free

Modified
AliasesUBUNTU-CVE-2022-1196DEBIAN-CVE-2022-1196ALPINE-CVE-2022-1196
Published 22-12-2022Last modified 16-04-2025

Vulnerability summary

CVE-2022-1196 is a medium (CVSS 6.5) Use After Free vulnerability in mozilla firefox esr. EPSS estimates a 0.75% chance of exploitation in the next 30 days, higher than 55% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.75%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 23 · Related 7
DLA-2971-1DLA-2978-1DSA-5113-1DSA-5118-1MGASA-2022-0156MGASA-2022-0157

Timeline

  1. 22-12-2022
    PublishedVulnerability first disclosed.
  2. 16-04-2025
    Last modifiedVulnerability information updated.

Description

After a VR Process is destroyed, a reference to it may have been retained and used, leading to a use-after-free and potentially exploitable crash. This vulnerability affects Thunderbird < 91.8 and Firefox ESR < 91.8.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.75%

Chance of exploitation in the next 30 days

Percentile

55%

Versus all other CVEs

30-day change

Increase +0.03 pp

From 0.73% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugzilla.mozilla.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Alpine2 products
  • firefox-esr< 91.8.0-r0
  • thunderbird< 91.8.0-r0
Debian2 products
  • firefox-esr< 91.8.0esr-1
  • thunderbird< 1:91.8.0-1
Mozilla2 products
Ubuntu2 products
  • firefox< 1:1snap1-0ubuntu1
  • thunderbird< 1:91.8.1+build1-0ubuntu0.18.04.1 | < 1:91.8.1+build1-0ubuntu0.20.04.1

4 vendors · 8 products

References

10 links