Paper/Archive/CVE-2026-100810

CVE-2026-100810

Mozilla Thunderbird — Other issue in the DevTools component

EPSS 0.4%CVSS 9.8

critical.is priorityof 100

36

CVSS 9.8 (ADP)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 31.4.314 × 206.3 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

Other issue in the DevTools component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.

Affected

ProductAffectedFixed inSource

Thunderbirdsee advisory157CNA

Firefoxsee advisory157CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refbugzilla.mozilla.org/show_bug.cgi?id=2064034 refmozilla.org/security/advisories/mfsa2026-101 refmozilla.org/security/advisories/mfsa2026-97