Vulnerability Description
Stack-based Buffer Overflow in lws_adns_parse_label in warmcat libwebsockets allows, when the LWS_WITH_SYS_ASYNC_DNS flag is enabled during compilation, to overflow the label_stack, when the attacker is able to sniff a DNS request in order to craft a response with a matching id containing a label longer than the maximum.
Related Weaknesses (CWE)
References
- https://libwebsockets.org/git/libwebsockets/commit?id=2bb9598562b37c942ba5b04bcd
- https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-11678
FAQ
What is CVE-2025-11678?
CVE-2025-11678 is a documented vulnerability. Stack-based Buffer Overflow in lws_adns_parse_label in warmcat libwebsockets allows, when the LWS_WITH_SYS_ASYNC_DNS flag is enabled during compilation, to overflow the label_stack, when the attacker ...
How severe is CVE-2025-11678?
CVSS scoring is not yet available for CVE-2025-11678. Check NVD for updates.
Is there a patch for CVE-2025-11678?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.