CVE Watch28 de out. de 2026

CVE-2026-89035

MikroTik RouterOS through 7.24.5 contains a session token replay vulnerability in the WebFig interface that allows attackers to bypass authe

CVSS

7.4

Alta

EPSS

0.3%

p20

KEV

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Exploit Today

0-100

Publicado: 21 de out. de 2026 · Última mod.: 28 de out. de 2026 · CWE-613

EPSS · 30d

0.3%EPSS · 30 dias0.3%

2026-10-222026-11-07

Descrição técnica

MikroTik RouterOS through 7.24.5 contains a session token replay vulnerability in the WebFig interface that allows attackers to bypass authentication by replaying captured session tokens across new ECDH sessions. The makeSessionKey function in libucrypto.so generates tokens using fixed salts without incorporating channel-specific or session-specific input, and the user service validates tokens against the login store without verifying channel context, enabling stolen tokens to grant persistent administrative access until the token store is explicitly cleared. This vulnerability extends the impact of CVE-2025-61481, which identified the underlying transport-layer exposure without a corresponding fix.

Referências oficiais

www.vulncheck.comhttps://www.vulncheck.com/advisories/mikrotik-routeros-webfig-session-token-replay-authentication-bypass

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