MikroTik fixes a high-severity vulnerability

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[TLP:CLEAR] MikroTik fixes a high-severity vulnerability

MikroTik fixes a high-severity vulnerability in RouterOS in version 7.24.5 [1].

MikroTik RouterOS - privilege escalation (CVE-2026-103903)

CVSS 8.7 (High)

Allows an authenticated remote attacker with low privileges, due to improper authorization during login via WinBox, to obtain administrator privileges of another account without knowing its password [1].

The vulnerability is present in product:

MikroTik RouterOS; >=7.0.0, <7.24.5

CVSS: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

More information:

CVE-2026-103903 at cve.org, NVD
CWE-863: Incorrect Authorization at cwe.mitre.org

The vulnerability was publicly disclosed 12. 10. 2026.

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[TLP:CLEAR] MikroTik fixes a high-severity vulnerability

MikroTik RouterOS - privilege escalation (CVE-2026-103903)

CVSS 8.7 (High)

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