CVE-2025-12779 Information disclosure in Amazon WorkSpaces
A local attacker can extract another user's authentication token from the Amazon WorkSpaces Linux client to access their WorkSpace.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-12779?
CVE-2025-12779 is a high-severity vulnerability in Amazon WorkSpaces, published on 5 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper handling of the authentication token in the Amazon WorkSpaces client for Linux, versions 2023.0 through 2024.8, may expose the authentication token for DCV-based WorkSpaces to other local users on the same client machine. Under certain circumstances, a local user may be able to extract another local user's authentication token from the shared client machine and access their WorkSpace.
To mitigate this issue, users should upgrade to the Amazon WorkSpaces client for Linux version 2025.0 or later.
Weakness: CWE-497
Which versions are affected by CVE-2025-12779?
How do I fix CVE-2025-12779?
No fix has been published for CVE-2025-12779 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-12779 being exploited?
There is no known exploitation of CVE-2025-12779 in the wild and no public exploit code.
Sources
Also known as GHSA-mcg2-rcmm-mhww.