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CVE-2025-5270

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CVE-2025-5270

Published: May 27, 2025

Modified: Apr 13, 2026

PUBLISHED

Description

In certain cases, SNI could have been sent unencrypted even when encrypted DNS was enabled. This vulnerability was fixed in Firefox 139 and Thunderbird 139.

VendorProductVersions

Mozilla

Firefox

unaffected
139 - <= *

Mozilla

Thunderbird

unaffected
139 - <= *

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