CVE-2020-5740
CVE-2020-5740 is a high-severity vulnerability in Plex Media Server with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-427.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 7.2
- EPSS exploit prediction: 1% (50th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-427
- Affected product: Plex Media Server
- Published:
- Last modified:
Description
Improper Input Validation in Plex Media Server on Windows allows a local, unauthenticated attacker to execute arbitrary Python code with SYSTEM privileges.
Frequently asked questions
- What is CVE-2020-5740?
- Improper Input Validation in Plex Media Server on Windows allows a local, unauthenticated attacker to execute arbitrary Python code with SYSTEM privileges.
- How severe is CVE-2020-5740?
- CVE-2020-5740 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-5740 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-5740?
- CVE-2020-5740 affects Plex Media Server. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-5740?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-5740 published?
- CVE-2020-5740 was published on 2020-04-22 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:plex:media_server:*:*:*:*:*:*:*:*
More vulnerabilities in Plex Media Server
- CVE-2018-13415 — Critical (CVSS 9.8): In Plex Media Server 1.13.2.5154, the XML parsing engine for SSDP/UPnP functionality is vulnerable to an XML External…
- CVE-2020-5742 — High (CVSS 8.8): Improper Access Control in Plex Media Server prior to June 15, 2020 allows any origin to execute cross-origin…
- CVE-2019-19141 — High (CVSS 8.8): The Camera Upload functionality in Plex Media Server through 1.18.2.2029 allows remote authenticated users to write…
- CVE-2025-69414 — High (CVSS 8.5): Plex Media Server (PMS) through 1.42.2.10156 allows retrieval of a permanent access token via a /myplex/account call…
- CVE-2021-33959 — High (CVSS 7.5): Plex media server 1.21 and before is vulnerable to ddos reflection attack via plex service.
- CVE-2014-9304 — High (CVSS 7.5): Plex Media Server before 0.9.9.3 allows remote attackers to bypass the web server whitelist, conduct SSRF attacks, and…
All CVEs affecting Plex Media Server →
Other CWE-427 (Uncontrolled Search Path Element) vulnerabilities
- CVE-2025-4981 — Critical (CVSS 9.9): Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to…
- CVE-2025-69599 — Critical (CVSS 9.8): RayVentory Scan Engine through 12.6 Update 8 allows attackers to gain privileges if they control the value of the PATH…
- CVE-2019-25268 — Critical (CVSS 9.8): NREL BEopt 2.8.0.0 contains a DLL hijacking vulnerability that allows attackers to load arbitrary libraries by tricking…
- CVE-2023-53959 — Critical (CVSS 9.8): FileZilla Client 3.63.1 contains a DLL hijacking vulnerability that allows attackers to execute malicious code by…
- CVE-2025-65741 — Critical (CVSS 9.8): Sublime Text 3 Build 3208 or prior for MacOS is vulnerable to Dylib Injection. An attacker could compile a .dylib file…
- CVE-2024-23054 — Critical (CVSS 9.8): An issue in Plone Docker Official Image 5.2.13 (5221) open-source software that could allow for remote code execution…
Browse all CWE-427 (Uncontrolled Search Path Element) vulnerabilities →