Riskcovery

CVE-2026-12290

Memory safety bug fixed in Thunderbird 152

State
Published
Severity
8.1 High
Published
Jun 16, 2026
Updated
Oct 21, 2026
Reserved
Jun 15, 2026

Read the record on cve.org

Description

Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

Scores

CVSSScoreVectorSource
3.18.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:NCISA-ADP
3.17.5 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Hredhat-SADP

Weaknesses

  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-823 Use of Out-of-range Pointer Offset

Affected Products

ProductVersions
FirefoxMozilla
  • 115.37 through 115.*Not affected
  • 140.12 through 140.*Not affected
  • 152 and laterNot affected
ThunderbirdMozilla
  • 140.12 through 140.*Not affected
  • 152 and laterNot affected

References

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