Is CVE-2021-42835 actively exploited?

CVE-2021-42835 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2021-42835?

CVE-2021-42835 has a CVSS score of 7 (HIGH severity). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2021-42835?

Patch guidance is available from plex security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-42835.

Fix CVE-2021-42835 - HIGH plex media server

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).

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: local
Complexity: high
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-367

Metadata

Primary Vendor: PLEX
Published: 12/8/2021
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2021-42835

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary