Plex Media Server up to 1.42.0.x resource transfer

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in Plex Media Server up to 1.42.0.x and classified as very critical. Affected by this vulnerability is an unknown functionality. Performing a manipulation results in input validation. This vulnerability is known as CVE-2025-34158. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as very critical, was found in Plex Media Server up to 1.42.0.x. This affects an unknown part. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-669. The product does not properly transfer a resource/behavior to another sphere, or improperly imports a resource/behavior from another sphere, in a manner that provides unintended control over that resource. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Plex Media Server (PMS) 1.41.7.x through 1.42.0.x before 1.42.1 is affected by incorrect resource transfer between spheres because /myplex/account provides the credentials of the server owner (and a /api/resources call reveals other servers accessible by that server owner).

The advisory is shared at forums.plex.tv. This vulnerability is uniquely identified as CVE-2025-34158 since 04/15/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/02/2026).

Upgrading to version 1.42.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-25425). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 9.2
VulDB Meta Temp Score: 9.0

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.5
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource transfer
CWE: CWE-669
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Media Server 1.42.1

Timelineinfo

04/15/2025 CVE reserved
08/21/2025 +128 days Advisory disclosed
08/21/2025 +0 days VulDB entry created
01/02/2026 +134 days VulDB entry last update

Sourcesinfo

Advisory: forums.plex.tv
Status: Confirmed

CVE: CVE-2025-34158 (🔒)
GCVE (CVE): GCVE-0-2025-34158
GCVE (VulDB): GCVE-100-320925
EUVD: 🔒

Entryinfo

Created: 08/21/2025 16:35
Updated: 01/02/2026 18:33
Changes: 08/21/2025 16:35 (65), 08/28/2025 04:07 (1), 08/28/2025 10:59 (14), 01/02/2026 18:33 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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