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CVE-2025-26696

Date: March 10, 2025

Certain crafted MIME email messages that claimed to contain an encrypted OpenPGP message, which instead contained an OpenPGP signed message, were wrongly shown as being encrypted. This vulnerability affects Thunderbird < 136 and Thunderbird < 128.8.

Severity Score

Related Resources (5)

https://www.mozilla.org/security/advisories/mfsa2025-18/
https://nvd.nist.gov/vuln/detail/CVE-2025-26696
https://bugzilla.mozilla.org/show_bug.cgi?id=1864205
https://www.mozilla.org/security/advisories/mfsa2025-17/
https://www.mend.io/vulnerability-database/CVE-2025-26696

Severity Score

Weakness Type (CWE)

Authentication Bypass by Spoofing

CWE-290

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): LOW
Availability (A): LOW

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