CRITICAL 9.3 NVD
CVE-2026-111711
Netcore NR256CN through 1.5.140116 contains a pre-authentication stack overflow vulnerability in the Boa web server's user_ok() function, which copies Basic-aut
Netcore NR256CN through 1.5.140116 contains a pre-authentication stack overflow vulnerability in the Boa web server's user_ok() function, which copies Basic-auth usernames with unbounded strcpy() calls into 64-byte stack buffers. Unauthenticated attackers can send a username longer than 63 bytes to any protected /router/*.cgi route to crash the main Boa process or potentially execute code.
References
- https://github.com/lukadqq/netcore-router-public-refs/blob/a44d562736b41c944223297e9144d2a
- https://www.vulncheck.com/advisories/netcore-nr256cn-through-1.5.140116-pre-auth-stack-ove
This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-10-16 via NVD.
Risk Timeline
CVE Disclosed2026-10-16 · -1 days ago
Remediation Resources
vulnfeed aggregates 16467 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.