Search/CVE-2026-6749
● CVE — High

CVE-2026-6749

VendormozillaProductfirefox, thunderbirdDiscoveredApr 21, 2026UpdatedOct 25, 2026

Information disclosure due to uninitialized memory in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

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CVSS v3.1
7.5 HIGH
EPSS
0.40%
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
Sep 25, 2026 → Oct 26, 2026
▼ 0.20pp
0.60% → 0.40% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityNONE
AvailabilityNONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Connections
4 relationships
Timeline
disclosure → media coverage
Apr 21, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 25, 2026