Riskcovery

CVE-2026-16361

Memory safety bugs fixed in Thunderbird ESR 140.13

State
Published
Severity
9.8 Critical
Published
Jul 21, 2026
Updated
Jul 24, 2026
Reserved
Jul 20, 2026

Read the record on cve.org

Description

Memory safety bugs present in Thunderbird ESR 140.12. 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 was fixed in Firefox ESR 115.38, Firefox ESR 140.13, and Thunderbird 140.13.

Scores

CVSSScoreVectorSource
3.19.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCISA-ADP

Weaknesses

  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

Affected Products

ProductVersions
FirefoxMozilla
  • 115.38 through 115.*Not affected
  • 140.13 and laterNot affected
ThunderbirdMozilla
  • 140.13 and laterNot affected

References

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