CVE-2026-4722

HIGH EPSS 23.0%
Published Mar 24, 20263mo ago · Modified Jun 17, 20261w ago
8.8 CVSS 3.1
High
Find Similar
Published Mar 24, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

Description

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

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
23.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Affected Products 1

VendorProductVersionRange
mozillafirefox* <149.0

References 3

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=2010097
    Permissions Required
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-20/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-23/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.