Microsoft · Exchange Server
CVE-2022-41082
Microsoft Exchange Server Remote Code Execution Vulnerability
CISA KEV record
- CISA date added
- 2022-09-30
- CISA due date
- 2022-10-21
- Known ransomware use
- Known
NVD risk context
8.0 HIGH
CVSS is a technical severity score. CISA’s KEV status remains the evidence that this vulnerability is known to be exploited.
Description
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.
Required action
Apply updates per vendor instructions.
NVD reference index
Vendor and remediation references
NVD has tagged these sources as vendor advisories, patches, mitigations, or release notes.
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41082 ↗
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-41082 ↗
Other NVD references (6)
- http://packetstormsecurity.com/files/170066/Microsoft-Exchange-ProxyNotShell-Remote-Code-Execution.html ↗
- https://www.kb.cert.org/vuls/id/915563 ↗
- 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-detection-script ↗
- https://www.vicarius.io/vsociety/posts/cve-2022-41082-microsoft-exchange-server-remote-code-execution-vulnerability-mitigation-script ↗
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-41082 ↗
MITRE CWE context
CWE classification
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
View official MITRE CWE details ↗NVD record timing
NVD record timeline
These dates describe NVD’s record, not CISA’s KEV addition or remediation due date.
- NVD published
- Oct 03, 2022, 01:15 AM UTC When NVD first published this CVE record.
- NVD last updated
- Jun 17, 2026, 05:02 AM UTC When NVD last changed its analysis or record data.
Advanced: view the technical CVSS vector
This standardized code is intended for security tools and technical analysts. The plain-language risk summary above explains its main points.
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA notes
https://msrc-blog.microsoft.com/2022/09/29/customer-guidance-for-reported-zero-day-vulnerabilities-in-microsoft-exchange-server/; https://nvd.nist.gov/vuln/detail/CVE-2022-41082