CVE-2017-6444

Routeros vulnerability

CVSS

7.5

EPSS

13.5%

EPSS pct

96th

Exploited

No known

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 vendor

Mikrotik

Affected product

Routeros

CVSS vector

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

Weakness type (CWE)

CWE-400 — Uncontrolled Resource Consumption

Published

2017-03-12

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 13.5% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2017-6444

Confirm whether Mikrotik Routeros is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2017-6444.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-6444

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2017-6444 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2017-6444?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2017-6444.

Start free scan

No credit card. Agentless.

Related vulnerabilities

HIGH

CVE-2018-0840

Internet Explorer vulnerability

Trixbox vulnerability