CVE-2026-4722 — Privilege Context Switching Error in Mozilla Firefox

CWE-270 — Privilege Context Switching Error9 documents8 sources
Severity
8.8HIGHNVD
EPSS
0.0%
top 96.93%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Mozilla Firefox
Timeline
PublishedMar 24

Description

Privilege escalation in the IPC component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.

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 Packages1 packages

▶NVDmozilla/firefox< 149.0

🔴Vulnerability Details

3
GHSA
GHSA-fmr6-7878-wx6p: Privilege escalation in the IPC component↗2026-03-24
▶
OSV
CVE-2026-4722: Privilege escalation in the IPC component↗2026-03-24
▶
CVEList
Privilege escalation in the IPC component↗2026-03-24
▶

📋Vendor Advisories

4
Red Hat
firefox: Privilege escalation in the IPC component↗2026-03-24
▶
Debian
CVE-2026-4722: firefox - Privilege escalation in the IPC component. This vulnerability affects Firefox < ...↗2026
▶
Mozilla
Mozilla Foundation Security Advisory 2026-23: CVE-2026-4722↗
▶
Mozilla
Mozilla Foundation Security Advisory 2026-20: CVE-2026-4722↗
▶

🕵️Threat Intelligence

1
Wiz
CVE-2026-4722 Impact, Exploitability, and Mitigation Steps | Wiz↗
▶
CVE-2026-4722 — Privilege Context Switching Error | cvebase