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Vulnerability record · CVE-2024-27686 · published 8 May 2026

CVE-2024-27686: Uncontrolled resource consumption vulnerability

Mikrotik RouterOS (x86) 6.40.5 through 6.49.10 (fixed in 7) allows a remote attacker to cause a denial of service (device crash) via crafted packet data to the SMB service on TCP port 445.

7.5 CVSS 3.1 High EPSS 0.59% · top 53.9% CWE-400 · Uncontrolled resource consumption Awaiting Analysis
7.5CVSS 3.1 base score
0.59%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Mikrotik RouterOS (x86) 6.40.5 through 6.49.10 (fixed in 7) allows a remote attacker to cause a denial of service (device crash) via crafted packet data to the SMB service on TCP port 445.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

LinkTags
https://github.com/ice-wzl/RouterOS-SMB-DOS-POC
https://www.exploit-db.com/exploits/51931

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Source: NIST National Vulnerability Database (record CVE-2024-27686), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.