What’s Vulnerable › Vulnerabilities

CVE-2017-6444

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 13.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2017-03-12 · updated 2026-06-17
• Weakness: CWE-400

Description

The MikroTik Router hAP Lite 6.25 has no protection mechanism for unsolicited TCP ACK packets in the case of a fast network connection, which allows remote attackers to cause a denial of service (CPU consumption) by sending many ACK packets. After the attacker stops the exploit, the CPU usage is 100% and the router requires a reboot for normal operation.

Affected products

• MikroTik RouterOS: 6.25

References

• http://www.exploitalert.com/view-details.html?id=26137
• https://cxsecurity.com/issue/WLB-2017030029
• https://packetstormsecurity.com/files/141449/Mikrotik-Hap-Lite-6.25-Denial-Of-Service.html
• https://www.exploit-db.com/exploits/41601/
• http://www.exploitalert.com/view-details.html?id=26137
• https://cxsecurity.com/issue/WLB-2017030029
• https://packetstormsecurity.com/files/141449/Mikrotik-Hap-Lite-6.25-Denial-Of-Service.html
• https://www.exploit-db.com/exploits/41601/

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