CVE-2025-8044

EUVD-2025-22357
Memory safety bugs present in Firefox 140 and Thunderbird 140. 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 141 and Thunderbird 141.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
mozillaCNA
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 37.23%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
mozillafirefox
𝑥
< 141.0
CNA
mozillathunderbird
𝑥
< 141.0
CNA
Debian logo
Debian Releases
Debian Product
Codename
firefox
sid
157.0-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
firefox
jammy
not-affected
noble
not-affected
plucky
not-affected
questing
not-affected
resolute
not-affected
mozjs102
jammy
ignored
noble
ignored
plucky
dne
questing
dne
resolute
dne
mozjs115
jammy
dne
noble
ignored
plucky
ignored
questing
dne
resolute
dne
mozjs38
bionic
needs-triage
jammy
dne
noble
dne
plucky
dne
questing
dne
resolute
dne
mozjs52
bionic
ignored
focal
ignored
jammy
dne
noble
dne
plucky
dne
questing
dne
resolute
dne
mozjs68
focal
ignored
jammy
dne
noble
dne
plucky
dne
questing
dne
resolute
dne
mozjs78
jammy
ignored
noble
dne
plucky
dne
questing
dne
resolute
dne
mozjs91
jammy
ignored
noble
dne
plucky
dne
questing
dne
resolute
dne
thunderbird
jammy
not-affected
noble
not-affected
plucky
not-affected
questing
not-affected
resolute
not-affected
Common Weakness Enumeration
References
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1933572%2C1971116
https://www.mozilla.org/security/advisories/mfsa2025-56/
https://www.mozilla.org/security/advisories/mfsa2025-61/