MikroTik fixes a vulnerability in RouterOS

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[TLP:CLEAR] MikroTik fixes a vulnerability in RouterOS

MikroTik version 7.25beta4 fixes a high-severity vulnerability in RouterOS [1].

MikroTik - DoS (CVE-2026-93345)

CVSS 8.7 (High)

An unauthenticated remote on-path attacker can carry out a DoS attack on the BGP service by sending a specially crafted message with an invalid prefix length. Exploitation of the vulnerability manifests as an unexpected termination of BGP sessions without an error message, followed by a failure of the routing service on the device [1].

The vulnerability is present in product:

MikroTik RouterOS; >=7.21.5, <7.25beta4;

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

More information:

CVE-2026-93345 at cve.org, NVD
CWE-1284: Improper Validation of Specified Quantity in Input at cwe.mitre.org

The vulnerability was publicly disclosed 22. 9. 2026.

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[TLP:CLEAR] MikroTik fixes a vulnerability in RouterOS

MikroTik - DoS (CVE-2026-93345)

CVSS 8.7 (High)

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