CVE-2019-3981 vulnerability in MikroTik Products
Published on January 14, 2020
MikroTik Winbox 3.20 and below is vulnerable to man in the middle attacks. A man in the middle can downgrade the client's authentication protocol and recover the user's username and MD5 hashed password.
Weakness Type
What is a Man-in-the-Middle / MITM Vulnerability?
The product does not adequately verify the identity of actors at both ends of a communication channel, or does not adequately ensure the integrity of the channel, in a way that allows the channel to be accessed or influenced by an actor that is not an endpoint. In order to establish secure communication between two parties, it is often important to adequately verify the identity of entities at each end of the communication channel. Inadequate or inconsistent verification may result in insufficient or incorrect identification of either communicating entity. This can have negative consequences such as misplaced trust in the entity at the other end of the channel. An attacker can leverage this by interposing between the communicating entities and masquerading as the original entity. In the absence of sufficient verification of identity, such an attacker can eavesdrop and potentially modify the communication between the original entities.
CVE-2019-3981 has been classified to as a Man-in-the-Middle / MITM vulnerability or weakness.
Products Associated with CVE-2019-3981
stack.watch emails you whenever new vulnerabilities are published in MikroTik Routeros or MikroTik Winbox. Just hit a watch button to start following.
Affected Versions
MikroTik WinBox Version Winbox 3.20 and below. is affected by CVE-2019-3981Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.