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Fencer Intel
critical 9.8

CVE-2018-13415 in the critical feed json

In Plex Media Server 1.13.2.5154, the XML parsing engine for SSDP/UPnP functionality is vulnerable to an XML External Entity Processing (XX…

published 8y ago modified 4mo ago also EUVD-2018-5358

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
31.5%
EPSS 31.5% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

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.

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Timeline

  1. First public exploit (EDB-45146)
  2. Published

Exploit prediction

31.46% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-45146 Plex Media Server 1.13.2.5154 - SSDP Processing XML External Entity Injection webapps, 2018-08-03
  • seclists.org http://seclists.org/fulldisclosure/2018/Aug/1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-611 Improper Restriction of XML External Entity Reference

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.