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CVE-2025-6432

High

Description

When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not responding. This vulnerability was fixed in Firefox 140 and Thunderbird 140.

SeverityHigh
CVSS8.6
Exploit probability—
ProductMozilla Firefox
PublishedJun 24, 2025
First seenJun 24, 2025
Weakness typeCWE-200Sensitive information exposure

How to fix

Update
  • mozilla firefox140.0 or later

Affected products

ProductAffected versionsFixed in
mozilla firefoxv < 140.0140.0

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