CVE-2017-6444
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 13.5%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 13.49% probability · 96th percentile
- Public exploits
- 1 in Exploit-DB · first 5 March 2017
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- mikrotik/routeros
- Source
- cve@mitre.org
EPSS 13.5% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://www.exploitalert.com/view-details.html?id=26137Exploit, Third Party Advisory
- https://cxsecurity.com/issue/WLB-2017030029Exploit, Third Party Advisory
- https://packetstormsecurity.com/files/141449/Mikrotik-Hap-Lite-6.25-Denial-Of-Service.htmlExploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/41601/Exploit, Third Party Advisory, VDB Entry
- http://www.exploitalert.com/view-details.html?id=26137Exploit, Third Party Advisory
- https://cxsecurity.com/issue/WLB-2017030029Exploit, Third Party Advisory
- https://packetstormsecurity.com/files/141449/Mikrotik-Hap-Lite-6.25-Denial-Of-Service.htmlExploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/41601/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.