CVE-2026-5733

CWE-119 — Buffer OverflowCWE-787 — Out-of-bounds Write10 documents8 sources
Severity
8.8HIGH
EPSS
0.0%
top 88.10%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla FirefoxMozilla Thunderbird
Timeline
PublishedApr 7

Description

Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability affects Firefox < 149.0.2 and Thunderbird < 149.0.2.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages3 packages

▶CVEListV5mozilla/firefoxunspecified — 149.0.2
▶NVDmozilla/firefox< 149.0.2
▶CVEListV5mozilla/thunderbirdunspecified — 149.0.2

🔴Vulnerability Details

2
GHSA
GHSA-qh3h-3qgq-cxv8: Incorrect boundary conditions in the Graphics: WebGPU component↗2026-04-07
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CVEList
Incorrect boundary conditions in the Graphics: WebGPU component↗2026-04-07
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📋Vendor Advisories

4
Red Hat
firefox: Incorrect boundary conditions in the Graphics: WebGPU component↗2026-04-07
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Debian
CVE-2026-5733: firefox - Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerabil...↗2026
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Mozilla
Mozilla Foundation Security Advisory 2026-28: CVE-2026-5733↗
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Mozilla
Mozilla Foundation Security Advisory 2026-25: CVE-2026-5733↗
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🕵️Threat Intelligence

1
Wiz
CVE-2026-5733 Impact, Exploitability, and Mitigation Steps | Wiz↗
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💬Community

1
Bugzilla
CVE-2026-5733 firefox: Incorrect boundary conditions in the Graphics: WebGPU component↗2026-04-07
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CVE-2026-5733 (HIGH CVSS 8.8) | Incorrect boundary conditions in th | cvebase.io