CVE-2022-41082: Microsoft Exchange Server Remote Code Execution Vulnerability

CVE-2022-41082 · Severity: critical · CVSS 8 · Exploited in the wild · Published 2022-09-30

Microsoft Exchange Server contains a remote code execution vulnerability, dubbed 'ProxyNotShell', caused by the deserialization of untrusted data. The vulnerability is chainable with CVE-2022-41040 and allows an authenticated attacker to execute arbitrary code on the server.

Technologies: Microsoft Exchange Server. Vendors: Microsoft.

Quick answers

Is CVE-2022-41082 exploited in the wild?
Yes. CVE-2022-41082 is known to be exploited in the wild, first recorded on 30 September 2022. Treat it as urgent.
How severe is CVE-2022-41082?
Critical severity, with a CVSS score of 8, published 30 September 2022.
Which products and versions are affected?
Microsoft Exchange Server.
Is there a fix for CVE-2022-41082?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2022-41082 attacked?
It is attacked from the adjacent network, in a hosted service.
Am I affected by CVE-2022-41082?
Check whether you run Microsoft Exchange Server. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Microsoft Exchange Server

Timeline

  • 2022-09-30: disclosed
  • 2022-09-30: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2022-09-30: exploited: Reported as exploited in the wild at time of publication.

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