CVE-2026-67281: falha de alta gravidade em Mikrotik RouterOS
Unauthenticated file read in Mikrotik RouterOS
Publicada em · Atualizada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
41Vexday Risk Score
Sem sinal de exploração. Ela tem prova de conceito pública.
ssvc Attendcvss 8.7epss 0.7%
da publicação à arma39 dias
Publicada no NVD5 de set.
1ª PoC+39d
RouterOS WebFig contains an unauthenticated file-read vulnerability in the /jsproxy path where a newly allocated session retains a stale uninitialized principal pointer used for file authorization. An unauthenticated attacker can prepare the allocator so that the file-serving path dereferences this pointer with sufficient rights, then supply parent-directory components in an encrypted URI to escape the WebFig file namespace and disclose root-owned files, including configuration stores containing credentials.This issue affects only 7.x branch was fixed in versions: 7.23.4 (Long-term) and 7.24.2 (Stable)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Produtos afetados
Mikrotik · RouterOSPoCs públicas encontradas — 2
githubgithub.com/sohel160/Webfig-jsproxy-unauthenticated-file-read-CVE-2026-67281-★ 0cve_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.
CVEs relacionadas — Mikrotik RouterOS
No mesmo produto, das mais perigosas para as menos.
CVE-2026-86060CRITICALSSH session privilege manipulation via a crafted username in Mikrotik RouterOSEPSS 6.4%KEVCVE-2026-67279MEDIUMSSH Pre-Authentication Rekey State Bypass in MikroTik RouterOSEPSS 2.3%KEVCVE-2026-67277HIGHKernel memory disclosure and denial of service in MikroTik RouterOS btest serviceEPSS 1.6%KEVCVE-2026-67276CRITICALSSH user impersonation possible in Mikrotik RouterOSEPSS 8.9%CVE-2023-32154HIGHMikrotik RouterOS RADVD Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 0.6%CVE-2025-6443HIGHMikrotik RouterOS VXLAN Source IP Improper Access Control VulnerabilityEPSS 0.6%
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/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/