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CVE PROGRAM SOURCE RECORD9.1 Critical

CVE-2026-89035

MikroTik RouterOS 7.24.5 WebFig Session Token Replay Authentication Bypass

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

MikroTik RouterOS

Default version status: unknown

  • 0 to ≤ 7.23.6affected
  • 7.24.0 to ≤ 7.24.5affected

References