Feb 2020:
CVE-2020-0688 Published on February 11, 2020

A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory, aka 'Microsoft Exchange Memory Corruption Vulnerability'.

NVD

Known Exploited Vulnerability

This Microsoft Exchange Server Key Validation Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory, aka 'Microsoft Exchange Memory Corruption Vulnerability'.

The following remediation steps are recommended / required by May 3, 2022: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2020-0688 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is an authentification Vulnerability?

When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.

CVE-2020-0688 has been classified to as an authentification vulnerability or weakness.


Products Associated with CVE-2020-0688

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Microsoft Exchange Server
 

Affected Versions

Microsoft Exchange Server 2013: Microsoft Exchange Server 2019 Cumulative Update 3: Microsoft Exchange Server 2016 Cumulative Update 14: Microsoft Exchange Server 2016 Cumulative Update 15: Microsoft Exchange Server 2019 Cumulative Update 4: Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 30:

Exploit Probability

EPSS
94.39%
Percentile
99.97%

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.