Search/CVE-2026-92052
● CVE — High

CVE-2026-92052

VendormozillaProductfirefox, thunderbirdDiscoveredSep 15, 2026UpdatedOct 5, 2026

Privilege escalation due to uninitialized memory in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.

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CVSS v3.1
8.8 HIGH
EPSS
0.24%
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 17, 2026 → Oct 7, 2026
▼ 0.02pp
0.26% → 0.24% over 4 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
3 relationships
Timeline
disclosure → media coverage
Sep 15, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 5, 2026