VulnSocial

CVE-2026-111711

LOWCVSS 9.3 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-121

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-10-17: 110-17
Referenced assets1 URL
By indicator
Full discourse1 post
  • The Hacker Wire@TheHackerWire

    🚨 CVE-2026-111711 (CVSS 9.3 Critical) Pre-auth stack overflow in Netcore NR256CN routers allows unauthenticated remote attackers to execute arbitrary code via unbounded strcpy() calls in the Boa web server. https://www.thehackerwire.com/vulnerability/CVE-2026-111711/ https://t.co/PKE6JzqjXG

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    188 followersView on X

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