Vulnerability details

CVE-2026-6761

Privilege escalation in the Networking component

CVSS 3.1

8.8High

Official description

Privilege escalation in the Networking component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

CVSS scores

Score	Version	Source	Vector
8.8High	3.1	CISA ADP / Vulnrichment (CISA-ADP)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
No product information recorded.

References and advisories

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Details

Published: 2026-04-21
Last updated: 2026-05-27
State: Published
Assigner (CNA): mozilla

Exploit prediction (EPSS)

0.22%

Probability of exploitation in 30 days

12.7%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-269
Improper Privilege Management