Which products and versions are affected by CVE-2025-13315?

Affected: Twonky Server (Lynxtechnology) versions 8.5.2, >= 8.5.2. The full list is in the CVE brief.

Is CVE-2025-13315 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed since Dec 15, 2025.

Is CVE-2025-13315 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2025-13315?

No public exploit code is known.

Is there a fix for CVE-2025-13315?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2025-13315 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2025-13315

CriticalExploited

Twonky Server 8.5.2 on Linux and Windows is vulnerable to an access control flaw.

Published Nov 19, 2025 · Updated Dec 2, 2025

Key Facts

Patch immediately

CVE-2025-13315 is a critical-severity vulnerability (CVSS 9.3 v4) affecting Twonky Server (Lynxtechnology).
It is exploited in the wild, listed in Industry KEV feed since Dec 15, 2025. No public exploit code is known.
EPSS estimates a 33% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v4

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

EPSS (30-day exploit likelihood)

33%

Higher than 98.3% of all scored CVEs

Exploited in the wild

Yes

1 catalog listing

Public exploit code

None known

Get the full CVE-2025-13315 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	Dec 15, 2025	n/a	Not reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
Twonky ServerLynxtechnology	8.5.2, >= 8.5.2	n/a

Timeline

Publicly disclosed
Nov 19, 2025
Last updated
Dec 2, 2025
Added to Industry KEV feed
Dec 15, 2025

Weakness Type

CWE-420 Unprotected Alternate Channel

References

FAQ

Common Questions.

Twonky Server 8.5.2 on Linux and Windows is vulnerable to an access control flaw.
Affected: Twonky Server (Lynxtechnology) versions 8.5.2, >= 8.5.2. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Dec 15, 2025.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2025-13315 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.