CVE-2025-65318

State: Published
Severity: 9.1 Critical
Published: Dec 16, 2025
Updated: Jul 5, 2026
Reserved: Nov 18, 2025

Description

When using the attachment interaction functionality, Canary Mail 5.1.40 and below saves documents to a file system without a Mark-of-the-Web tag, which allows attackers to bypass the built-in file protection mechanisms of both Windows OS and third-party software.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	CISA-ADP

Weaknesses

CWE-693 Protection Mechanism Failure

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://drive.google.com/file/d/14wrTzvcLPfFsWmy-SAtDwwZKKPssBsx5/view
https://github.com/nickvourd/RTI-Toolkit
https://github.com/bbaboha/CVE-2025-65318-and-CVE-2025-65319

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