Is CVE-2018-1000155 actively exploited?

No active exploitation of CVE-2018-1000155 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-1000155 be exploited remotely?

Yes. CVE-2018-1000155 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-1000155?

CVE-2018-1000155 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2018-1000155

CWE-863Published: May 24, 2018· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

OpenFlow version 1.0 onwards contains a Denial of Service and Improper authorization vulnerability in OpenFlow handshake: The DPID (DataPath IDentifier) in the features_reply message are inherently trusted by the controller. that can result in Denial of Service, Unauthorized Access, Network Instability. This attack appear to be exploitable via Network connectivity: the attacker must first establish a transport connection with the OpenFlow controller and then initiate the OpenFlow handshake.

NVD Source

Technical Analysis

CVE-2018-1000155 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 complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.