HOMEVULNERABILITIESCVE-2017-6444
HIGHPOC

CVE-2017-6444

CWE-400Published: March 12, 2017· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2017-6444 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

A proof-of-concept (PoC) exploit exists for CVE-2017-6444. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

mikrotik2 product(s)
routerosrouter hap lite
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

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

All References (8)

→
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

Quick Facts

CVE IDCVE-2017-6444
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-400
CISA KEVNo
ExploitPOC
Affected1 vendor(s)
PublishedMar 12, 2017

Related CVEs (CWE-400)

CVE-2015-4412
9.8
CVE-2018-19282
9.8
CVE-2017-9119
9.8
CVE-2024-36543
9.8
CVE-2022-48716
9.8
CVE-2024-45166
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-6444 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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