CVE-2026-100802 json
Uninitialized memory in the Graphics: WebGPU component
published last mo. modified 21d ago also EUVD-2026-88955
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 15%
- public exploits
- 0
- none known
Summary
Uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
Patch / fix
- mozilla thunderbird 157
- mozilla thunderbird_esr 157
- mozilla firefox 157
- mozilla firefox_esr 157
- MozillaFirefox openSUSE Tumbleweed 157.0.1-1.1
opensuse advisories openSUSE-SU-2026:12097-1
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What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-100802 updated cvss 6.1
firefox: Uninitialized memory in the Graphics: WebGPU component
-
Red Hat Enterprise Linux 6 firefox Red Hat Enterprise Linux 7 firefox Red Hat Enterprise Linux 8 firefox Red Hat Enterprise Linux 9 firefox, firefox-x11 Red Hat Enterprise Linux 10 firefox, rhel10/firefox-flatpaknot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
Affected products
- Mozilla Thunderbird
- Mozilla Firefox
Classification
- Weakness
-
- CWE-457 Use of Uninitialized Variable
References
-
mozilla.org
/security/advisories/mfsa2026-101/
vendor-advisory
-
mozilla.org
/security/advisories/mfsa2026-97/
vendor-advisory
-
bugzilla.mozilla.org
/show_bug.cgi?id=2057833
permissions-required
Sources
- CVE List CVE-2026-100802
- NVD CVE-2026-100802
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.