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% (84th 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% (84th 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% (84th 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…
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