CVE-2025-65318 Security feature bypass in n/a
Attackers can bypass Windows and third-party file protection mechanisms by saving attachments without Mark-of-the-Web tags in Canary Mail.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-65318?
CVE-2025-65318 is a critical vulnerability in n/a, published on 16 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-693
Which versions are affected by CVE-2025-65318?
It affects 1 product.
Products include Canarymail Canary Mail.
How do I fix CVE-2025-65318?
No fix has been published for CVE-2025-65318 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-65318 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-65318 exists.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as GHSA-w2r9-w6fr-cq88.