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TI-2023-17244 Aliases CVE-2023-34417GHSA-jr8c-7w56-v2rh

Out-of-bounds write in Mozilla Firefox

Priority MEDIUM 50CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

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

Summary

Memory safety bugs present in Firefox 113. 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 < 114.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0078 56th percentileScored 2026-11-07
Fix Fixed Firefox (Mozilla): 114

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
MozillaFirefoxbefore 114114Patch availableCNA
  • Firefox VendorMozilla Affected before 114 Fixed in 114 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 114.0VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 114.0 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 114

Fixed in the same release

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

  • Release ·

    Mozilla Firefox 114

    4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2023-17243 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 44
    • TI-2023-17242 Open redirect in Mozilla FirefoxPriority LOW 27
    • TI-2023-17241 Improper certificate validation in Mozilla Firefox ESRPriority LOW 17
    Show all 4 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-34417
  2. 2026-10-03 Alias added: GHSA-jr8c-7w56-v2rh

References

Advisory 1

Other 2

  • 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