← Back

CVE-2021-42835

nvd nist
Published: Dec 8, 2021Modified: Jun 17, 2026

JSON object

Loading...
7.0
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.0 / Impact: 5.9
Source: NVD

Description

An issue was discovered in Plex Media Server through 1.24.4.5081-e362dc1ee. An attacker (with a foothold in a endpoint via a low-privileged user account) can access the exposed RPC service of the update service component. This RPC functionality allows the attacker to interact with the RPC functionality and execute code from a path of his choice (local, or remote via SMB) because of a TOCTOU race condition. This code execution is in the context of the Plex update service (which runs as SYSTEM).

Affected (1)

Products: Plex: Media Server
Plex
1 product
Media Server
Configuration A
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Media Server
Before 1.25.0.5282
Running on/withPlatform Versions
Microsoft
Windows
All versions

Related CWEs

CWE-367
Time-of-check Time-of-use (TOCTOU) Race Condition
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.

References (8)

Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Vendor Advisory
Source: cve@mitre.org
ExploitThird Party Advisory
Source: cve@mitre.org
ProductVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ProductVendor Advisory

Timeline

No history available yet.