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Fencer Vulns
critical 9.8

CVE-2025-13315 in the critical feed json

Unauthenticated log access in Twonky Server

published 2025-11-19 11 mo ago modified 2026-10-18 21 d ago also EUVD-2025-198189

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
31.2%
EPSS 31.2% chance of exploitation in 30 days, percentile 98%
public exploits
1
Metasploit, plus a Nuclei check

Summary

Twonky Server 8.5.2 on Linux and Windows is vulnerable to an access control flaw. An unauthenticated attacker can bypass web service API authentication controls to leak a log file and read the administrator's username and encrypted password.

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
11 mo ago

Exploit prediction

31.18% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit auxiliary/gather/twonky_authbypass_logleak Twonky Server Log Leak Authentication Bypass metasploit auxiliary, normal rank
  • Nuclei template Twonky Server 8.5.2 on Linux and Windows - Log File Exposure nuclei detection template
  • rapid7.com https://www.rapid7.com/blog/post/cve-2025-13315-cve-2025-13316-critical-twonky-server-authentication-bypass-not-fixed/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 4.0 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Lynxtechnology Twonky Server

Classification

Weakness
  • CWE-420 Unprotected Alternate Channel

References

Sources

Fencer Vulns 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.