CVE-2026-4724

CWE-758CWE-4759 documents8 sources
Severity
9.1CRITICAL
EPSS
0.0%
top 96.97%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla FirefoxMozilla Thunderbird
Timeline
PublishedMar 24

Description

Undefined behavior in the Audio/Video component. This vulnerability affects Firefox < 149 and Thunderbird < 149.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NExploitability: 3.9 | Impact: 5.2

Affected Packages4 packages

▶CVEListV5mozilla/firefoxunspecified — 149
▶NVDmozilla/firefox< 149.0
▶CVEListV5mozilla/thunderbirdunspecified — 149
▶NVDmozilla/thunderbird< 149.0

🔴Vulnerability Details

3
GHSA
GHSA-j97q-98f4-5wq3: Undefined behavior in the Audio/Video component↗2026-03-24
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CVEList
Undefined behavior in the Audio/Video component↗2026-03-24
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OSV
CVE-2026-4724: Undefined behavior in the Audio/Video component↗2026-03-24
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📋Vendor Advisories

4
Red Hat
firefox: Undefined behavior in the Audio/Video component↗2026-03-24
▶
Debian
CVE-2026-4724: firefox - Undefined behavior in the Audio/Video component. This vulnerability affects Fire...↗2026
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Mozilla
Mozilla Foundation Security Advisory 2026-23: CVE-2026-4724↗
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Mozilla
Mozilla Foundation Security Advisory 2026-20: CVE-2026-4724↗
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🕵️Threat Intelligence

1
Wiz
CVE-2026-4724 Impact, Exploitability, and Mitigation Steps | Wiz↗
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CVE-2026-4724 (CRITICAL CVSS 9.1) | Undefined behavior in the Audio/Vid | cvebase.io