What is the CVSS score of CVE-2022-41082?

CVE-2022-41082 has a CVSS 3.1 base score of 8.0 (High). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 91.7%.

Is there a public PoC exploit available for CVE-2022-41082?

Yes, a public proof-of-concept exploit is available for CVE-2022-41082. Prioritise patching immediately. EPSS: 91.7%.

How to fix or mitigate CVE-2022-41082?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Restrict deserialization to trusted data sources and implement integrity checks.

CVE-2022-41082

HIGH

Deserialization of Untrusted Data (CWE-502)

2022-10-03 secure@microsoft.com

8.0

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.0 HIGH

AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 26, 2026 - 11:19 vuln.today

Added to CISA KEV

Oct 30, 2025 - 19:39 cisa

CISA KEV

PoC Detected

Oct 30, 2025 - 19:39 vuln.today

Public exploit code

Patch released

Oct 30, 2025 - 19:39 nvd

Patch available

CVE Published

Oct 03, 2022 - 01:15 nvd

HIGH 8.0

DescriptionCVE.org

Microsoft Exchange Server Remote Code Execution Vulnerability

AnalysisAI

Microsoft Exchange Server allows authenticated remote code execution through PowerShell deserialization, the second component of 'ProxyNotShell' enabling SYSTEM-level command execution when chained with CVE-2022-41040.

Technical ContextAI

The CWE-502 deserialization flaw in Exchange's PowerShell Remoting processes crafted serialized objects that execute arbitrary commands. When accessed through the ProxyNotShell SSRF, unauthenticated-equivalent RCE is achieved (only mailbox credentials needed).

Affected ProductsAI

Microsoft Exchange Server 2013/2016/2019

RemediationAI

Apply Microsoft security updates urgently. Monitor for unusual PowerShell execution on Exchange servers. Consider migrating to Exchange Online to eliminate on-premises Exchange attack surface.