CVE-2020-0612Network attack vector

Service hang via crafted RDP requests

Published Jan 14, 2020 · Updated Aug 4, 2024

Denial of service in Microsoft Windows Server 2016 and 2019 RD Gateway allows remote attackers to halt the service via crafted RDP requests. Microsoft states that RD Gateway mishandles crafted connection requests but has not disclosed the faulty operation or code locus. An RD Gateway service must be reachable; successful exploitation makes the service stop responding without reported data exposure or modification.

CVSS severity7.5
High
EPSS probability4.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Microsoft Windows Server 2016 and 2019 RD Gateway allows remote attackers to halt the service via crafted RDP requests. Microsoft states that RD Gateway mishandles crafted connection requests but has not disclosed the faulty operation or code locus. An RD Gateway service must be reachable; successful exploitation makes the service stop responding without reported data exposure or modification.

The record

CVE
CVE-2020-0612
Published
Jan 14, 2020
Updated
Aug 4, 2024
Vendor
Microsoft
Product
Windows Server
Classifications
T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 14, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2016
  2. Affected versionversion=2019

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Windows Serverversion=2016; version=2019

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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