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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.82373.

Exploitation none

Automatable yes

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Lynxtechnology Twonky Server unaffected
Version Status Constraints
8.5.2 affected
—

Configuration 1 [-]

AND
cpe:2.3:a:lynxtechnology:twonky_server:8.5.2:*:*:*:*:*:*:*
OR cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

No data.

Vendor Product Confidence Versions
Linux Linux — —
Lynxtechnology Twonky Server — —
Microsoft Windows — —

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Tracking

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.rapid7.com/blog/post/cve-2025-13315-cve-2025-13316-critical-twonky-server-authentication-bypass-not-fixed/ cve-icon cve-icon
History

Tue, 02 Dec 2025 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Linux linux Kernel
CPEs cpe:2.3:a:lynxtechnology:twonky_server:8.5.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Vendors & Products Linux linux Kernel
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Mon, 24 Nov 2025 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux
Lynxtechnology
Lynxtechnology twonky Server
Microsoft
Microsoft windows
Vendors & Products Linux
Linux linux
Lynxtechnology
Lynxtechnology twonky Server
Microsoft
Microsoft windows

Wed, 19 Nov 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 19 Nov 2025 18:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Unauthenticated log access in Twonky Server
Weaknesses CWE-420
References
Metrics cvssV4_0

{'score': 9.3, 'vector': '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: rapid7

Published:

Updated: 2025-11-19T18:20:50.718Z

Reserved: 2025-11-17T15:07:40.828Z

Link: CVE-2025-13315

cve-icon Vulnrichment

Updated: 2025-11-19T18:20:47.162Z

cve-icon NVD

Status : Analyzed

Published: 2025-11-19T18:15:47.843

Modified: 2025-12-02T16:42:19.270

Link: CVE-2025-13315

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-11-24T09:10:45Z

Weaknesses