CVE-2018-13415

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 31.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-08-13 · updated 2026-06-17
Weakness: CWE-611

Description

In Plex Media Server 1.13.2.5154, the XML parsing engine for SSDP/UPnP functionality is vulnerable to an XML External Entity Processing (XXE) attack. Remote, unauthenticated attackers can use this vulnerability to: (1) Access arbitrary files from the filesystem with the same permission as the user account running Plex, (2) Initiate SMB connections to capture a NetNTLM challenge/response and crack to cleartext password, or (3) Initiate SMB connections to relay a NetNTLM challenge/response and achieve Remote Command Execution in Windows domains.

Affected products

Plex Media Server: 1.13.2.5154

References

http://seclists.org/fulldisclosure/2018/Aug/1
https://www.exploit-db.com/exploits/45146/
http://seclists.org/fulldisclosure/2018/Aug/1
https://www.exploit-db.com/exploits/45146/

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