critical9.8
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-au…
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| Netcore NR256CN | through 1.5.140116 |
Versions were read from the advisory text. No structured product data has been published for this record yet.