Description

Microsoft Exchange Server Remote Code Execution Vulnerability

INFO

Published Date :

May 11, 2021, 7:15 p.m.

Last Modified :

Aug. 2, 2023, 12:15 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2021-31195 has a 13 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-31195 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft exchange_server
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-2021-31195.

URL Resource
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31195 Patch Vendor Advisory

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).

None

Shell

Updated: 1 week, 4 days ago
3 stars 2 fork 2 watcher
Born at : March 23, 2023, 4:32 a.m. This repo has been linked 435 different CVEs too.

None

Shell

Updated: 1 week, 4 days ago
1 stars 0 fork 0 watcher
Born at : March 19, 2023, 1:53 a.m. This repo has been linked 265 different CVEs too.

None

Shell

Updated: 1 year, 6 months ago
2 stars 0 fork 0 watcher
Born at : Nov. 16, 2022, 9:38 a.m. This repo has been linked 256 different CVEs too.

None

Updated: 1 year, 8 months ago
0 stars 0 fork 0 watcher
Born at : Sept. 30, 2022, 6:29 p.m. This repo has been linked 253 different CVEs too.

None

Shell

Updated: 1 month, 1 week ago
1 stars 1 fork 1 watcher
Born at : Aug. 25, 2022, 12:16 a.m. This repo has been linked 250 different CVEs too.

A curated list of my GitHub Stars

Updated: 2 months, 4 weeks ago
1 stars 1 fork 1 watcher
Born at : July 5, 2022, 7:40 p.m. This repo has been linked 32 different CVEs too.

None

Updated: 2 years, 2 months ago
0 stars 0 fork 0 watcher
Born at : May 9, 2022, 1:43 p.m. This repo has been linked 32 different CVEs too.

TOP All bugbounty pentesting CVE-2023- POC Exp RCE example payload Things

bugbounty cve exp exploit payload poc rce vulnerability

Shell

Updated: 1 week, 4 days ago
647 stars 116 fork 116 watcher
Born at : March 19, 2022, 1:54 a.m. This repo has been linked 273 different CVEs too.

None

Python Go C

Updated: 3 weeks, 4 days ago
46 stars 8 fork 8 watcher
Born at : March 10, 2022, 10:54 a.m. This repo has been linked 9 different CVEs too.

Proxylogon & Proxyshell & Proxyoracle & Proxytoken & All exchange server history vulns summarization :)

attackchains exploit vulnerability exchange-server golang python-script proxylogon proxyshell proxyoracle proxytoken proxyrelay cve-2021-42321 proxymaybeshell proxynotshell

Go Python C C# Batchfile Ruby ASP.NET HTML PowerShell JavaScript

Updated: 1 week, 5 days ago
499 stars 102 fork 102 watcher
Born at : Nov. 27, 2021, 1:32 p.m. This repo has been linked 37 different CVEs too.

NSE script to detect ProxyOracle

Lua

Updated: 1 month, 1 week ago
14 stars 2 fork 2 watcher
Born at : Aug. 30, 2021, 6:45 a.m. This repo has been linked 1 different CVEs too.

[ProxyLogon] CVE-2021-26855 & CVE-2021-27065 Fixed RawIdentity Bug Exploit. [ProxyOracle] CVE-2021-31195 & CVE-2021-31196 Exploit Chains. [ProxyShell] CVE-2021-34473 & CVE-2021-34523 & CVE-2021-31207 Exploit Chains.

Python

Updated: 1 month, 1 week ago
173 stars 33 fork 33 watcher
Born at : April 14, 2021, 11:12 a.m. This repo has been linked 7 different CVEs too.

essential templates for kenzer [DEPRECATED]

kenzer vulnerabilities kenzer-templates arpsyndicate

Python Shell Ruby

Updated: 1 month, 1 week ago
106 stars 32 fork 32 watcher
Born at : Sept. 18, 2020, 9:03 p.m. This repo has been linked 1653 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-31195 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-31195 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.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Aug. 02, 2023

    Action Type Old Value New Value
    Changed Description Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-31198. Microsoft Exchange Server Remote Code Execution Vulnerability
    Added CVSS V3.1 Microsoft Corporation AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
  • Initial Analysis by [email protected]

    May. 17, 2021

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31195 No Types Assigned https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31195 Patch, Vendor Advisory
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration OR *cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_20:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:* *cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-31195 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-2021-31195 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

91.60 }} -0.33%

score

0.98973

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability