Is CVE-2025-67109 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2025-67109 being exploited in the wild.

How severe is CVE-2025-67109?

Critical severity, with a CVSS score of 10, published 23 December 2025.

Which products and versions are affected?

Eclipse Foundation Cyclone DDS before 0.10.5.

Is there a fix for CVE-2025-67109?

A patch was published on 2026-01-06: NVD enrichment confirms versions before 0.10.5 are affected. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2025-67109 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2025-67109?

Check whether you run Eclipse Cyclone Data Distribution Service or Eclipse Foundation Cyclone DDS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2025-67109: Eclipse Cyclone DDS certificate expiration bypass in authentication plugin

CVE-2025-67109 · Severity: critical · CVSS 10 · Published 2025-12-23

Eclipse Cyclone DDS, a software library used for high-performance data communication in robotics and automotive systems, contains a critical security flaw in how it verifies digital certificates. An attacker can bypass security checks by manipulating the system time, allowing them to present expired or invalid credentials as legitimate. If successfully exploited, this could allow an unauthorized user to take full control of the system and execute arbitrary commands with high-level privileges.

Vendors: Eclipse, Eclipse Foundation.

Quick answers

Is CVE-2025-67109 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2025-67109 being exploited in the wild.
How severe is CVE-2025-67109?: Critical severity, with a CVSS score of 10, published 23 December 2025.
Which products and versions are affected?: Eclipse Foundation Cyclone DDS before 0.10.5.
Is there a fix for CVE-2025-67109?: A patch was published on 2026-01-06: NVD enrichment confirms versions before 0.10.5 are affected. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2025-67109 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2025-67109?: Check whether you run Eclipse Cyclone Data Distribution Service or Eclipse Foundation Cyclone DDS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

Eclipse Cyclone DDS before v0.10.5 is vulnerable to certificate validation bypass (CWE-298) due to its reliance on manipulable system time for expiration checks. The 'dds_time' function in 'time.c' utilizes 'clock_gettime(CLOCK_REALTIME)', which returns the system wall clock time rather than a trusted monotonic or external time source. Consequently, the 'check_certificate_expiry' function in 'auth_utils.c' and OpenSSL's 'X509_cmp_current_time' use this adjustable time to validate certificates. An attacker who can influence the system clock can force the library to accept expired or future-dated certificates, leading to authentication bypass and remote code execution with System privileges. The issue is addressed in version 0.10.5.

Affected products

Eclipse Cyclone DDS before 0.10.5

Timeline

2025-12-23: advisory
2025-12-23: disclosed
2026-01-06: patched: NVD enrichment confirms versions before 0.10.5 are affected.

References

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