CVE-2026-89035 (GCVE-0-2026-89035)

Vulnerability from cvelistv5 – Published: 2026-10-21 17:16 – Updated: 2026-10-21 17:16
VLAI
Title
MikroTik RouterOS 7.24.5 WebFig Session Token Replay Authentication Bypass
Summary
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.
Severity
9.1 (Critical)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-613 - Insufficient Session Expiration
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6748 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
MikroTik RouterOS Affected: 0 , ≤ 7.23.6 (semver)
Affected: 7.24.0 , ≤ 7.24.5 (semver)
guessed Create a notification for this product.
Date Public
2026-10-21 00:00
Credits
Valentin Lobstein (Chocapikk)
Show details on NVD website
To clipboard 

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    "dateReserved": "2026-09-10T16:23:54.472Z",
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          }
        ],
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}



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