CVE-2018-13415

9.8 criticalEPSS 31%

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.

Severity

CVSS 3.0

9.8 critical

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 31% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
CWE: CWE-611
Published: 2018-08-13
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

plex:media_server

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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