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TI-2017-03427 Aliases CVE-2017-5399GHSA-6j9r-8v43-253q

Memory corruption in Mozilla Firefox

Priority MEDIUM 46CWE-119Published · 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 3.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

Memory safety bugs were reported in Firefox 51. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 52 and Thunderbird < 52.

Why it matters now

EPSS 0.02269 83rd percentileScored 2026-11-07
Fix Fixed Firefox (Mozilla): 52Thunderbird (Mozilla): 52

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefoxbefore 5252Patch availableCNA
MozillaThunderbirdbefore 5252Patch availableCNA
  • Firefox VendorMozilla Affected before 52 Fixed in 52 Patch available CNA
  • Thunderbird VendorMozilla Affected before 52 Fixed in 52 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 52.0VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 52.0VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 52.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 52.0 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 52
  • Fix · CNA Thunderbird (Mozilla) Fixed in 52

Fixed in the same release

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

  • Release ·

    Mozilla Firefox 52

    19 records Highest priority Priority MEDIUM 4 MEDIUM, 15 LOW

    Other records, highest priority first

    • TI-2017-03441 Memory corruption in Mozilla FirefoxPriority MEDIUM 46
    • TI-2017-03431 Use after free in Mozilla FirefoxPriority MEDIUM 45
    • TI-2017-03440 Memory corruption in Mozilla FirefoxPriority MEDIUM 40
    Show all 19 records →
  • Release ·

    Mozilla Thunderbird 52

    14 records Highest priority Priority MEDIUM 4 MEDIUM, 10 LOW

    Other records, highest priority first

    • TI-2017-03441 Memory corruption in Mozilla FirefoxPriority MEDIUM 46
    • TI-2017-03431 Use after free in Mozilla FirefoxPriority MEDIUM 45
    • TI-2017-03440 Memory corruption in Mozilla FirefoxPriority MEDIUM 40
    Show all 14 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-5399
  2. 2026-10-03 Alias added: GHSA-6j9r-8v43-253q

References

Advisory 3

  • 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