CVE-2025-11678
7.5
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| warmcat | libwebsocket | 4.0 <= 4.4.2 | affected |
| warmcat | libwebsocket | 4.0 <= 4.3.6 | affected |
Weaknesses
- CWE-121: CWE-121 Stack-based Buffer Overflow
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
- https://libwebsockets.org/git/libwebsockets/commit?id=2bb9598562b37c942ba5b04bcde3f7fdf66a9d3a
- https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-11678
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.