CVE-2025-65318

Name: CVE-2025-65318
Creator: NVD / NIST
Published: 2025-12-16T16:15:59.673+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.48%

Last modified Jun 17, 2026

CVE-2025-65318 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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.. EPSS estimates a 0.48% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

0.48%

37.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-693

Affected Software

Vendor	Product	Versions
Canarymail	Canary Mail	<= 5.1.40

References

http://canary.comBroken Link
http://canarymail.comBroken Link
https://drive.google.com/file/d/14wrTzvcLPfFsWmy-SAtDwwZKKPssBsx5/viewExploit
https://github.com/bbaboha/CVE-2025-65318-and-CVE-2025-65319Exploit, Third Party Advisory
https://github.com/nickvourd/RTI-ToolkitNot Applicable
https://github.com/bbaboha/CVE-2025-65318-and-CVE-2025-65319Exploit, Third Party Advisory

Timeline

Published: Dec 16, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-65318?

How severe is CVE-2025-65318?

CVE-2025-65318 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.

How do I fix CVE-2025-65318?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-65318?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST