CVE-2020-0688
Microsoft Exchange Server Validation Key Remote Co - [Actively Exploited]
Description
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'.
INFO
Published Date :
Feb. 11, 2020, 10:15 p.m.
Last Modified :
April 4, 2025, 7:31 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
2.8
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
Microsoft Exchange Server Validation Key fails to properly create unique keys at install time, allowing for remote code execution.
Apply updates per vendor instructions.
https://nvd.nist.gov/vuln/detail/CVE-2020-0688
Public PoC/Exploit Available at Github
CVE-2020-0688 has a 159 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-0688.
| URL | Resource |
|---|---|
| http://packetstormsecurity.com/files/156592/Microsoft-Exchange-2019-15.2.221.12-Remote-Code-Execution.html | Exploit Third Party Advisory VDB Entry |
| http://packetstormsecurity.com/files/156620/Exchange-Control-Panel-Viewstate-Deserialization.html | Exploit Third Party Advisory VDB Entry |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0688 | Patch Vendor Advisory |
| https://www.zerodayinitiative.com/advisories/ZDI-20-258/ | Third Party Advisory VDB Entry |
| http://packetstormsecurity.com/files/156592/Microsoft-Exchange-2019-15.2.221.12-Remote-Code-Execution.html | Exploit Third Party Advisory VDB Entry |
| http://packetstormsecurity.com/files/156620/Exchange-Control-Panel-Viewstate-Deserialization.html | Exploit Third Party Advisory VDB Entry |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0688 | Patch Vendor Advisory |
| https://www.zerodayinitiative.com/advisories/ZDI-20-258/ | Third Party Advisory VDB Entry |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Una hoja de trucos que contiene métodos comunes de enumeración y ataque para Windows Active Directory.
None
Shell Batchfile Python
SMB Mapper for ANDRAX-NG
Shell Python Roff PowerShell
Exploit for CVE-2025-30406
C#
None
This is my starred repositories including the description for each tool. Makes search/filter over them easier.
None
C#
中间件的exp
None
PowerShell C#
This cheat sheet contains common enumeration and attack methods for Windows Active Directory.
None
C#
CrypeAlbatros is a handy Offensive tool to Scan Microsoft Windows over the Samba protocol.
exploit mapping microsoft post-exploitation relay samba smb windows
Python Roff PowerShell C C# PHP Ruby
None
Shell Batchfile Python
None
C#
A cheat sheet that contains common enumeration and attack methods for Windows Active Directory. This cheat sheet is inspired by the PayloadAllTheThings repo.
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-0688 vulnerability anywhere in the article.
-
The Hacker News
Microsoft Identifies 3,000 Leaked ASP.NET Keys Enabling Code Injection Attacks
Cloud Security / Web Security Microsoft is warning of an insecure practice wherein software developers are incorporating publicly disclosed ASP.NET machine keys from publicly accessible resources, the ... Read more
-
blogspot.com
If You Can't Patch Your Email Server, You Should Not Be Running It
CVE-2020-0688 Scan Results, per Rapid7 tl;dr -- it's the title of the post: "If You Can't Patch Your Email Server, You Should Not Be Running It." I read a disturbing story today with the following new ... Read more
The following table lists the changes that have been made to the
CVE-2020-0688 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Modified Analysis by [email protected]
Apr. 04, 2025
Action Type Old Value New Value -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Feb. 04, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-287 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/156592/Microsoft-Exchange-2019-15.2.221.12-Remote-Code-Execution.html Added Reference http://packetstormsecurity.com/files/156620/Exchange-Control-Panel-Viewstate-Deserialization.html Added Reference https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0688 Added Reference https://www.zerodayinitiative.com/advisories/ZDI-20-258/ -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Feb. 13, 2024
Action Type Old Value New Value -
CWE Remap by [email protected]
Jul. 12, 2022
Action Type Old Value New Value Changed CWE CWE-798 CWE-287 -
Modified Analysis by [email protected]
Dec. 30, 2021
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/156592/Microsoft-Exchange-2019-15.2.221.12-Remote-Code-Execution.html No Types Assigned http://packetstormsecurity.com/files/156592/Microsoft-Exchange-2019-15.2.221.12-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry Changed Reference Type http://packetstormsecurity.com/files/156620/Exchange-Control-Panel-Viewstate-Deserialization.html No Types Assigned http://packetstormsecurity.com/files/156620/Exchange-Control-Panel-Viewstate-Deserialization.html Exploit, Third Party Advisory, VDB Entry Changed Reference Type https://www.zerodayinitiative.com/advisories/ZDI-20-258/ No Types Assigned https://www.zerodayinitiative.com/advisories/ZDI-20-258/ Third Party Advisory, VDB Entry -
CWE Remap by [email protected]
Jul. 21, 2021
Action Type Old Value New Value Changed CWE CWE-502 CWE-798 -
CVE Modified by [email protected]
Mar. 04, 2020
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/156620/Exchange-Control-Panel-Viewstate-Deserialization.html [No Types Assigned] -
CVE Modified by [email protected]
Mar. 02, 2020
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/156592/Microsoft-Exchange-2019-15.2.221.12-Remote-Code-Execution.html [No Types Assigned] -
CVE Modified by [email protected]
Feb. 20, 2020
Action Type Old Value New Value Added Reference https://www.zerodayinitiative.com/advisories/ZDI-20-258/ [No Types Assigned] -
Initial Analysis by [email protected]
Feb. 13, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0688 No Types Assigned https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0688 Patch, Vendor Advisory Added CWE NIST CWE-502 Added CPE Configuration OR *cpe:2.3:a:microsoft:exchange_server:2010:sp3_rollup_30:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_14:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_15:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_3:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_4:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-0688 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-0688
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
94.42 }} -0.04%
score
0.99976
percentile