CVE-2025-12779

State: Published
Severity: 8.8 High
Published: Nov 5, 2025
Updated: Feb 26, 2026
Reserved: Nov 5, 2025

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.

Scores

CVSS	Score	Vector	Source
4.0	8.8 High	CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H	AMZN
3.1	8.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H	AMZN

Weaknesses

CWE-497 Access of Sensitive System Information to an Unauthorized Control Sphere

Affected Products

Product	Versions
Amazon WorkSpacesAmazon	2025.0Not affected

References

https://aws.amazon.com/security/security-bulletins/AWS-2025-025/vendor-advisory
https://docs.aws.amazon.com/workspaces/latest/userguide/amazon-workspaces-linux-client.html#linux-release-notespatchrelease-notes

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