CVE-2025-11678CWE-121

CVE-2025-11678

published October 20, 2025

CVSS
7.5
EPSS
0%
Percentile
20.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
7.5 · NONE
CVSS v4.0
Not supplied
EPSS
0.00285 · 20.0th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2025-10-20T18:15Z
References (2)
https://libwebsockets.org/git/libwebsockets/commit?id=2bb9598562b37c942ba5b04bcde3f7fdf66a9d3a · [email protected]https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-11678 · [email protected]
EPSS history
Timeline
  • 20 OCT 13:51Z
    Stack-based Buffer Overflow in libwebsockets DNS response parsing
    cvelistv5