CVE-2026-89035 — MikroTik RouterOS 7.24.5 WebFig Session Token Replay Authentication Bypass
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 sessi…
Published: 2026-10-21 · CVSS: 9.1 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7