Vulnerability Description
We have identified a buffer overflow issue allowing out-of-bounds write when processing LLMNR or mDNS queries with very long DNS names. This issue only affects systems using Buffer Allocation Scheme 1 with LLMNR or mDNS enabled. Users should upgrade to the latest version and ensure any forked or derivative code is patched to incorporate the new fixes.
Related Weaknesses (CWE)
References
- https://aws.amazon.com/security/security-bulletins/AWS-2025-012/
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.3.2
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-5x4f-fvv8
FAQ
What is CVE-2025-5688?
CVE-2025-5688 is a documented vulnerability. We have identified a buffer overflow issue allowing out-of-bounds write when processing LLMNR or mDNS queries with very long DNS names. This issue only affects systems using Buffer Allocation Scheme 1...
How severe is CVE-2025-5688?
CVSS scoring is not yet available for CVE-2025-5688. Check NVD for updates.
Is there a patch for CVE-2025-5688?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.