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TI-2022-07001 Aliases CVE-2022-22751GHSA-599g-72g6-j2r4

Out-of-bounds write in Mozilla Firefox ESR

Priority MEDIUM 42CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 10 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

Mozilla developers Calixte Denizet, Kershaw Chang, Christian Holler, Jason Kratzer, Gabriele Svelto, Tyson Smith, Simon Giesecke, and Steve Fink reported memory safety bugs present in Firefox 95 and Firefox ESR 91.4. 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 ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00919 60th percentileScored 2026-11-07
Fix Partial Firefox ESR (Mozilla): 91.5Firefox (Mozilla): 96+1 more productRed Hat: 10 advisoriesRed Hat: 10 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefox ESRbefore 91.591.5Patch availableCNA
MozillaFirefoxbefore 9696Patch availableCNA
MozillaThunderbirdbefore 91.591.5Patch availableCNA
  • Firefox ESR VendorMozilla Affected before 91.5 Fixed in 91.5 Patch available CNA
  • Firefox VendorMozilla Affected before 96 Fixed in 96 Patch available CNA
  • Thunderbird VendorMozilla Affected before 91.5 Fixed in 91.5 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 96.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 91.5VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 91.5VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 96.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 91.5 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 91.5 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox ESR (Mozilla) Fixed in 91.5
  • Fix · CNA Firefox (Mozilla) Fixed in 96
  • Fix · CNA Thunderbird (Mozilla) Fixed in 91.5

Red Hat 10 advisories

  • RHSA-2022:0127 Released 2022-01-12 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux Client (v. 7) thunderbird-91.5.0-1.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-91.5.0-1.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) thunderbird-91.5.0-1.el7_9
  • RHSA-2022:0124 Released 2022-01-12 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux Client (v. 7) firefox-91.5.0-1.el7_9
    • Red Hat Enterprise Linux Client Optional (v. 7) firefox-91.5.0-1.el7_9
    • Red Hat Enterprise Linux Server (v. 7) firefox-91.5.0-1.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) firefox-91.5.0-1.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) firefox-91.5.0-1.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-91.5.0-1.el7_9
  • RHSA-2022:0129 Released 2022-01-12 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream (v. 8) thunderbird-91.5.0-1.el8_5
Show 7 more Red Hat advisories
  • RHSA-2022:0128 Released 2022-01-12 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird-91.5.0-1.el8_4
  • RHSA-2022:0132 Released 2022-01-12 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) firefox-91.5.0-1.el8_2
  • RHSA-2022:0131 Released 2022-01-12 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-91.5.0-1.el8_1
  • RHSA-2022:0126 Released 2022-01-12 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) firefox-91.5.0-1.el8_4
  • RHSA-2022:0130 Released 2022-01-12 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream (v. 8) firefox-91.5.0-1.el8_5
  • RHSA-2022:0125 Released 2022-01-12 · Red Hat rating Important
    firefox security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-91.5.0-1.el8_1
  • RHSA-2022:0123 Released 2022-01-12 · Red Hat rating Important
    thunderbird security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) thunderbird-91.5.0-1.el8_2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Mozilla Firefox 96

    19 records Highest priority Priority HIGH 5 HIGH, 6 MEDIUM, 8 LOW

    Other records, highest priority first

    • TI-2021-03015 XML injection in Mozilla Firefox ESRPriority HIGH 82
    • TI-2022-07013 Race condition in Mozilla FirefoxPriority HIGH 73
    • TI-2022-06988 Out-of-bounds write in Mozilla Firefox ESRPriority HIGH 73
    Show all 19 records →
  • Release ·

    Mozilla Firefox ESR, Thunderbird 91.5

    14 records Highest priority Priority HIGH 3 HIGH, 5 MEDIUM, 6 LOW

    Other records, highest priority first

    • TI-2021-03015 XML injection in Mozilla Firefox ESRPriority HIGH 82
    • TI-2022-06988 Out-of-bounds write in Mozilla Firefox ESRPriority HIGH 73
    • TI-2022-06987 Race condition in Mozilla Firefox ESRPriority HIGH 68
    Show all 14 records →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2022:0129, RHSA-2022:0130
Red Hat Enterprise Linux AppStream E4S (v. 8.1)Fixed RHSA-2022:0125, RHSA-2022:0131
Red Hat Enterprise Linux AppStream EUS (v. 8.2)Fixed RHSA-2022:0123, RHSA-2022:0132
Red Hat Enterprise Linux AppStream EUS (v.8.4)Fixed RHSA-2022:0126, RHSA-2022:0128
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2022:0124, RHSA-2022:0127
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2022:0124
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2022:0124
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2022:0124, RHSA-2022:0127
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2022:0124, RHSA-2022:0127
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2022:0124

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-22751
  2. 2026-10-03 Alias added: GHSA-599g-72g6-j2r4

References

Advisory 4

  • TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
  • TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 3444 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences