CVE-2018-8581: Microsoft Exchange Server Privilege Escalation Vulnerability

CVE-2018-8581 · Severity: critical · CVSS 7.4 · Exploited in the wild · Published 2022-03-03

An elevation of privilege vulnerability in Microsoft Exchange Server allows a remote attacker to impersonate other users. The flaw stems from insufficient permission validation, potentially granting the attacker the same privileges as the impersonated user.

Technologies: Microsoft Exchange Server. Vendors: Microsoft.

Quick answers

Is CVE-2018-8581 exploited in the wild?
Yes. CVE-2018-8581 is known to be exploited in the wild, first recorded on 3 March 2022. Treat it as urgent.
How severe is CVE-2018-8581?
Critical severity, with a CVSS score of 7.4, published 3 March 2022.
Which products and versions are affected?
Microsoft Exchange Server 2010, 2013, 2016, 2019.
Is there a fix for CVE-2018-8581?
A patch was published on 2018-11-14: Microsoft released security guidance and patches. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2018-8581 attacked?
It is attacked over the network, in a hosted service.
Am I affected by CVE-2018-8581?
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 2010, 2013, 2016, 2019

Timeline

  • 2018-11-13: disclosed: NVD Published Date
  • 2018-11-14: patched: Microsoft released security guidance and patches.
  • 2022-03-03: kev added: Added to CISA's Known Exploited Vulnerabilities Catalog.
  • 2022-03-03: exploited: Reported as exploited in the wild.

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