Is CVE-2025-34158 in the CISA KEV catalog?

No. CVE-2025-34158 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-34158?

CVE-2025-34158 has a CVSS v3 base score of 8.5 (HIGH).

What is the EPSS score for CVE-2025-34158?

CVE-2025-34158 has an EPSS score of 0.54% (42th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2025-34158?

No published fix for CVE-2025-34158 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2025-34158

HIGH

8.5

CVSS v3

NVD

Description

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).

CWE-669

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Exploit Intelligence

0.54%probability of exploitation in 30 days

42ndpercentile

Moderate risk: more likely to be exploited than 42% of all known CVEs.

References

Other references8

Related Vulnerabilities

Other CWE-669 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2026-31431	Medium	5.5	96%	KEV	Fix
CVE-2002-0055	Medium	5.0	35%	-	-
CVE-2020-1048	High	7.8	17%	-	-
CVE-2021-22900	High	7.2	14%	KEV	-
CVE-2026-25253	High	8.8	8.0%	-	Fix
CVE-2020-6862	Medium	5.3	6.3%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-02.