🛡️ CVE-2026-16385 — firefox

🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-908 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

Weakness class

CVE-2026-16385 is classified as CWE-908: Use of Uninitialized Resource. A resource is read before being initialised, so its contents are whatever was left there.

Affected software

CVE-2026-16385 is recorded against 2 packages.

  • firefox (fixed in 153.0.0)
  • thunderbird (fixed in 153.0)

Timeline and source

Published on 21 July 2026 and last revised on 27 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

bugzilla.mozilla.org
www.mozilla.org
www.mozilla.org

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE CWE-908
Public Exploit ✅ No
Source NVD
Published 2026-07-21
Updated 2026-08-11
Modified 2026-07-27
Fix URL N/A

Affected Packages

Software From version Fixed in
firefox — 153.0.0
thunderbird — 153.0

Similar Threats

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