CVE-2024-27686

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 v3.1

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

EPSS

0.59% chance of exploitation in the next 30 days, 46th percentile

Published

2026-05-08

Proof-of-concept exploits (3)

• ice-wzl/RouterOS-SMB-DOS-POC
• https://www.exploit-db.com/exploits/51931
• ThemeHackers/CVE-2024-27686

References

• CVE Record
• NVD entry

Related

• CVE-2018-16763
• CVE-2024-10914
• CVE-2024-21413
• CVE-2024-38063
• CVE-2024-6387
• CVE-2025-10035