Search/CVE-2026-74969
● CVE — High

CVE-2026-74969

VendormozillaProductfirefox, thunderbirdDiscoveredAug 18, 2026UpdatedOct 28, 2026

Race condition, use-after-free in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

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CVSS v3.1
8.8 HIGH
EPSS
0.48%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 20, 2026 → Sep 25, 2026
▲ 0.32pp
0.16% → 0.48% over 3 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionREQUIRED
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityHIGH
AvailabilityHIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Connections
4 relationships
Timeline
disclosure → media coverage
Aug 18, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 28, 2026