CVE-2025-11678 — Stack-based Buffer Overflow in libwebsockets DNS response parsing
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_st…
Published: 2025-10-20 · CVSS: 7.5 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7