How severe is CVE-2025-13316?

CVE-2025-13316 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-13316 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-13316?

CVE-2025-13316 affects Lynxtechnology Twonky Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-13316?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-13316 have an EU (EUVD) identifier?

Yes. CVE-2025-13316 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198198.

When was CVE-2025-13316 published?

CVE-2025-13316 was published on 2025-11-19 and last updated on 2026-06-17.

CVE-2025-13316

CVE-2025-13316 is a high-severity vulnerability in Lynxtechnology Twonky Server with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-321.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v4: 8.2
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-198198
Weakness: CWE-321
Affected product: Lynxtechnology Twonky Server
Published: 2025-11-19
Last modified: 2026-06-17

Description

Twonky Server 8.5.2 on Linux and Windows is vulnerable to a cryptographic flaw, use of hard-coded cryptographic keys. An attacker with knowledge of the encrypted administrator password can decrypt the value with static keys to view the plain text password and gain administrator-level access to Twonky Server.

Frequently asked questions

What is CVE-2025-13316?: Twonky Server 8.5.2 on Linux and Windows is vulnerable to a cryptographic flaw, use of hard-coded cryptographic keys. An attacker with knowledge of the encrypted administrator password can decrypt the value with static keys to view the plain text password and gain administrator-level access to Twonky Server.
How severe is CVE-2025-13316?: CVE-2025-13316 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-13316 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-13316?: CVE-2025-13316 affects Lynxtechnology Twonky Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-13316?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-13316 have an EU (EUVD) identifier?: Yes. CVE-2025-13316 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198198.
When was CVE-2025-13316 published?: CVE-2025-13316 was published on 2025-11-19 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:lynxtechnology:twonky_server:8.5.2:*:*:*:*:*:*:*

More vulnerabilities in Lynxtechnology Twonky Server

CVE-2025-13315 — Critical (CVSS 9.8): Twonky Server 8.5.2 on Linux and Windows is vulnerable to an access control flaw. An unauthenticated attacker can…
CVE-2018-7171 — High (CVSS 7.5): Directory traversal vulnerability in Twonky Server 7.0.11 through 8.5 allows remote attackers to share the contents of…
CVE-2018-9182 — Medium (CVSS 6.1): Twonky Server before 8.5.1 has XSS via a modified "language" parameter in the Language section.
CVE-2018-9177 — Medium (CVSS 6.1): Twonky Server before 8.5.1 has XSS via a folder name on the Shared Folders screen.
CVE-2018-7203 — Medium (CVSS 6.1): Cross-site scripting (XSS) vulnerability in Twonky Server 7.0.11 through 8.5 allows remote attackers to inject…

All CVEs affecting Lynxtechnology Twonky Server →

Other CWE-321 vulnerabilities

CVE-2024-30207 — Critical (CVSS 10.0): A vulnerability has been identified in SIMATIC RTLS Locating Manager (6GT2780-0DA00) (All versions < V3.0.1.1), SIMATIC…
CVE-2014-5419 — Critical (CVSS 10.0): GE Multilink ML800, ML1200, ML1600, and ML2400 switches with firmware 4.2.1 and earlier and Multilink ML810, ML3000,…
CVE-2024-35344 — Critical (CVSS 9.9): Certain Anpviz products contain a hardcoded cryptographic key stored in the firmware of the device. This affects…
CVE-2026-16504 — Critical (CVSS 9.8): Deployment of the VPS.org one-click Zulip template deploys a hardcoded application signing key, a default database…
CVE-2021-32086 — Critical (CVSS 9.8): An issue was discovered in Quest KACE Systems Deployment Appliance (SMA) 11.0.273. It uses a hardcoded symmetric…
CVE-2026-47410 — Critical (CVSS 9.8): PraisonAI Platform is the platform layer for the PraisonAI multi-agent teams system. Versions prior to 0.1.4 have an…

Browse all CWE-321 vulnerabilities →