CVE-2026-100810
Thunderbird: Other issue in the DevTools component
Mozilla Thunderbird
CVSS
9.8CriticalExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.38%Chance of exploitation activity in the next 30 days, higher than 30% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
Other issue in the DevTools component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
Text from CVE List
Affected versions 2
- Thunderbirdunaffected: 157CVE List
- Firefoxunaffected: 157CVE List