CVE-2026-6773 — Integer Overflow or Wraparound in Mozilla Firefox

CWE-190 — Integer Overflow or Wraparound7 documents6 sources
Severity
7.5HIGHNVD
EPSS
0.1%
top 83.81%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla FirefoxMozilla Thunderbird
Timeline
PublishedApr 21
Latest updateApr 28

Description

Denial-of-service due to integer overflow in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶Mozillamozilla/firefox< Firefox 150
▶Mozillamozilla/thunderbird< Thunderbird 150

🔴Vulnerability Details

2
VulDB
Mozilla Firefox up to 149 WebGPU integer overflow (Nessus ID 310632)↗2026-04-28
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GHSA
GHSA-7625-jhq2-5p8g: Denial-of-service due to integer overflow in the Graphics: WebGPU component↗2026-04-21
▶

📋Vendor Advisories

3
Red Hat
WebGPU: Firefox: WebGPU: Denial of Service via integer overflow↗2026-04-21
▶
Mozilla
Mozilla Foundation Security Advisory 2026-30: CVE-2026-6773↗
▶
Mozilla
Mozilla Foundation Security Advisory 2026-33: CVE-2026-6773↗
▶

💬Community

1
Bugzilla
CVE-2026-6773 WebGPU: Firefox: WebGPU: Denial of Service via integer overflow↗2026-04-21
▶
CVE-2026-6773 — Integer Overflow or Wraparound | cvebase