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CVE-2022-41082

Microsoft Exchange Server Remote Code Execution

8.0 HIGHActively exploited (CISA KEV)Used in ransomwarePublic exploitEPSS 100.0%
  1. Published2 Oct 2022
  2. Added to CISA KEV30 Sept 2022
  3. Remediation due21 Oct 2022
Actively exploited (CISA KEV)

Microsoft Exchange Server contains an unspecified vulnerability that allows for authenticated remote code execution. Dubbed "ProxyNotShell," this vulnerability is chainable with CVE-2022-41040 which allows for the remote code execution.

Added to KEV: 30 Sept 2022Federal remediation due: 21 Oct 2022Used in ransomware

Description

Microsoft Exchange Server Remote Code Execution Vulnerability

CVSS 3.1 breakdown

Attack vectorAdjacent
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Microsoft Exchange Server2013 · 2016 · 2019

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Frequently asked

Is CVE-2022-41082 being actively exploited?

Yes. CVE-2022-41082 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 30 Sept 2022. It has been used in ransomware campaigns.

How severe is CVE-2022-41082?

CVE-2022-41082 has a CVSS 3.1 base score of 8.0, rated high. EPSS estimates a 100.0% probability of exploitation.

Which products are affected by CVE-2022-41082?

Affected products include Microsoft Exchange Server.

How do I fix CVE-2022-41082?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2022-41082 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.