CVE-2026-16386

highpriority · track · 0EPSS 0.004 · 37 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.43% (37th) EPSS

CVSS 7.5 · high

Is it mine?

20 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondaryexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-908US

affected products (20)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
IGEL OSall versionscert_bundDEcpe:/o:igel:os:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Mozilla Firefox< 153cert_bundDE
Mozilla Firefox ESR< 115.38cert_bundDE
Mozilla Firefox ESR< 140.13cert_bundDE
Mozilla Mozilla Firefox <153< 153cert_bundDE
Mozilla Mozilla Firefox ESR <115.38< 115.38cert_bundDE
Mozilla Mozilla Firefox ESR <140.13< 140.13cert_bundDE
Mozilla Mozilla Thunderbird <140.13< 140.13cert_bundDE
Mozilla Mozilla Thunderbird <153< 153cert_bundDE
Mozilla Thunderbird< 140.13cert_bundDE
Mozilla Thunderbird< 153cert_bundDE
mozilla firefox< 153.0.0nvdUScpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozilla thunderbird< 153.0nvdUScpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2458Mozilla Firefox und Thunderbird: Mehrere SchwachstellenDeutsch2026-07-21csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Mozilla Firefox und Mozilla Thunderbird ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, Berechtigungen zu erweitern, Sandbox-Escapes durchzuführen, Daten zu manipulieren, einen Denial-of-Service-Zustand auszulösen oder Speicherbeschädigungen zu verursachen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2026-07-21modified 2026-10-24

references (8)

External citations — patches, advisories, analysis.

scry

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