CVE-2026-93345 MikroTik RouterOS - Denial of Service

MikroTik RouterOS < 7.25beta4 contains an improper input validation vulnerability in labelled-VPN NLRI iterators of the routing service, letting unauthenticated on-path attackers crash the BGP service by sending malformed MP_REACH_NLRI UPDATE messages with invalid prefix-lengths.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.49% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
22 September 2026
Updated
15 October 2026
Weakness
CWE-1284

Vendor fix

Update to version 7.25beta4 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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