CVE-2025-6432

HIGH EPSS 20.4%
Published Jun 24, 20251y ago · Modified Jun 17, 20262w ago
8.6 CVSS 3.1
High
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Published Jun 24, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.6
Exploitability
3.9
Impact
4.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity Low
Availability Low

Threat Intelligence

EPSS Exploit Probability
20.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor Information Exposure

Affected Products 1

VendorProductVersionRange
mozillafirefox* <140.0

References 3

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1943804
    Permissions Required
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-51/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-54/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.