CVE-2020-0692Network attack vector

Unauthenticated privilege escalation

Published Feb 11, 2020 · Updated Aug 4, 2024

Elevation of privilege in affected Microsoft Exchange Server 2013, 2016, and 2019 builds allows remote attackers to gain privileges. Microsoft has not published the defective component or the operation it performs incorrectly. Exploitation requires no authentication or user action but depends on high-complexity conditions; the resulting privilege level is undisclosed.

CVSS severity8.1
High
EPSS probability3.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Elevation of privilege in affected Microsoft Exchange Server 2013, 2016, and 2019 builds allows remote attackers to gain privileges. Microsoft has not published the defective component or the operation it performs incorrectly. Exploitation requires no authentication or user action but depends on high-complexity conditions; the resulting privilege level is undisclosed.

The record

CVE
CVE-2020-0692
Published
Feb 11, 2020
Updated
Aug 4, 2024
Vendor
Microsoft
Product
Microsoft Exchange Server 2013
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 11, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=Cumulative Update 23

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Exchange Server 2013version=Cumulative Update 23
Microsoft · Microsoft Exchange Server 2019 Cumulative Update 4version=unspecified
Microsoft · Microsoft Exchange Server 2019 Cumulative Update 3version=unspecified
Microsoft · Microsoft Exchange Server 2016 Cumulative Update 14version=unspecified
Microsoft · Microsoft Exchange Server 2016 Cumulative Update 15version=unspecified

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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

No sourced classifications are available.

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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