6.5

CVE-2022-1097: mozilla firefox Use After Free

Modified
AliasesALPINE-CVE-2022-1097SUSE-SU-2022:1113-1SUSE-SU-2022:1149-1
Published 22-12-2022Last modified 16-04-2025

Vulnerability summary

CVE-2022-1097 is a medium (CVSS 6.5) Use After Free vulnerability in mozilla firefox. EPSS estimates a 0.95% chance of exploitation in the next 30 days, higher than 61.3% 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
0.95%
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 26 · Related 10
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

<code>NSSToken</code> objects were referenced via direct points, and could have been accessed in an unsafe way on different threads, leading to a use-after-free and potentially exploitable crash. This vulnerability affects Thunderbird < 91.8, Firefox < 99, and Firefox ESR < 91.8.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.95%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

Increase +0.03 pp

From 0.92% 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.

Suse41 products
  • mozilla-nss&distro=HPE Helion OpenStack 8< 3.68.3-58.69.1
  • mozilla-nss&distro=SUSE Enterprise Storage 6< 3.68.3-150000.3.67.1
  • mozilla-nss&distro=SUSE Enterprise Storage 7< 3.68.3-150000.3.67.1
  • mozilla-nss&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS< 3.68.3-150000.3.67.1
  • mozilla-nss&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS< 3.68.3-150000.3.67.1
Alpine5 products
  • firefox< 99.0-r0
  • firefox-esr< 91.8.0-r0
  • librewolf< 99.0-r0
  • nss< 3.68.3-r0 | < 3.72.1-r1 | < 3.76.1-r0
  • thunderbird< 91.8.0-r0
Mozilla3 products
Debian2 products
  • firefox-esr< 91.8.0esr-1
  • thunderbird< 1:91.8.0-1
Ubuntu2 products
  • firefox< 99.0+build2-0ubuntu0.18.04.2 | < 99.0+build2-0ubuntu0.20.04.2 | < 1:1snap1-0ubuntu1
  • thunderbird< 1:91.8.1+build1-0ubuntu0.18.04.1 | < 1:91.8.1+build1-0ubuntu0.20.04.1
Opensuse1 product
  • mozilla-nss&distro=openSUSE Leap 15.3< 3.68.3-150000.3.67.1

6 vendors · 54 products

References

18 links
Show all 18 references