# CVE-2022-41082: Microsoft Exchange Server - RCE

> Live exploitation tracking for CVE-2022-41082 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2022-41082

## Key facts

- **Exploitation phase:** Background Noise. Continuous low-level scanning or exploitation attempts are observed, mostly opportunistic and automated.
- **CVSS score:** 8.0
- **Public exploit available:** Yes
- **Affected products:** Microsoft Exchange Server
- **Weaknesses:** CWE-502 (Deserialization of Untrusted Data)
- **Tags:** windows, enterprise_software

## Description

Microsoft Exchange Server Remote Code Execution Vulnerability

## CrowdSec analysis

[CVE-2022-41082](https://euvd.enisa.europa.eu/vulnerability/CVE-2022-41082) is a significant vulnerability in Microsoft Exchange that enables remote code execution through crafted requests, leveraging weaknesses in the server’s handling of certain interfaces.

CrowdSec has been tracking this vulnerability and its exploits since 1st of October 2022.

Based on data from the CrowdSec network, nearly all observed exploitation of CVE-2022-41082 is fully opportunistic, with attackers indiscriminately scanning the entire internet. These attacks are automated and lack any form of target selection or reconnaissance.
CrowdSec data also reveals a clear uptick in attacks involving CVE-2022-41082 over the past week. Activity is above the usual baseline, suggesting growing attention from attackers. This may reflect rising awareness, recent exploit releases, or expanded targeting efforts.

Attempts to exploit this vulnerability frequently focus on public-facing Exchange servers accessible over the internet.

## Timeline

- 2022-09-30: CISA KEV. CVE-2022-41082 is added to the Known Exploited Vulnerabilities catalog by CISA.
- 2022-10-01: Rule Released. CrowdSec releases a rule to detect CVE-2022-41082 exploitation attempts against the CrowdSec Network.
- 2022-10-01: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2022-41082 for the first time.
- 2022-10-03: CVE Published. CVE-2022-41082 is published to NVD.
- 2022-10-21: CISA Remediation Deadline. Expiration of the CISA remediation deadline as described in [BOD 22-01](https://www.cisa.gov/news-events/directives/bod-22-01-reducing-significant-risk-known-exploited-vulnerabilities).

## References

- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41082
- https://www.vicarius.io/vsociety/posts/cve-2022-41082-microsoft-exchange-server-remote-code-execution-vulnerability-detection-script
- https://www.secpod.com/blog/microsoft-november-2022-patch-tuesday-patches-65-vulnerabilities-including-6-zero-days/
- https://www.vicarius.io/vsociety/posts/cve-2022-41082-microsoft-exchange-server-remote-code-execution-vulnerability-mitigation-script
- https://www.kb.cert.org/vuls/id/915563

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2022-41082) follows observed exploitation activity for CVE-2022-41082. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.