Riskcovery

CVE-2026-7323

Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1

State
Published
Severity
7.3 High
Published
Apr 28, 2026
Updated
Jul 15, 2026
Reserved
Apr 28, 2026

Read the record on cve.org

Description

Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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 150.0.1, Firefox ESR 140.10.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.

Scores

CVSSScoreVectorSource
3.17.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:LCISA-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-787 Out-of-bounds Write

Affected Products

ProductVersions
FirefoxMozilla
  • 140.10.1 through 140.*Not affected
  • 150.0.1 and laterNot affected
ThunderbirdMozilla
  • 140.10.1 through 140.*Not affected
  • 150.0.1 and laterNot affected

References

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