SSH Pre-Authentication Rekey State Bypass in MikroTik RouterOS
33Vexday Risk Score
Sem sinal de exploração. Ela tem prova de conceito pública.
ssvc Attendcvss 6.9epss 0.4%
probabilidade de exploração
0.4%top 62% das CVEs
exploração observada
nãonenhuma fonte reporta
1 exploit(s) público(s)
RouterOS SSH enters the connection protocol after a client-requested rekey even though user authentication was never attempted, allowing an unauthenticated client to open a session channel and send an exec request. On affected builds the server dispatches the command, enabling unauthenticated creation, overwrite, and reconstruction of files in the RouterOS managed file namespace, including support files containing configuration and diagnostic data.This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Produtos afetados
Mikrotik · RouterOSPoCs públicas encontradas — 1
cve_referencenpratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/não verificado⚠ Recursos públicos, para você avaliar a exposição de sistemas que controla ou está autorizado a testar. Teste apenas com autorização.
Referências
https://cert.pl/en/posts/2026/09/mikrotik-routeros-cvehttps://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/https://forum.mikrotik.com/t/6-49-21-long-term-is-released/272802https://forum.mikrotik.com/t/7-23-4-long-term-is-released/272801https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800https://mikrotik.com/supportsec/september-2026-vulnerability/https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/