Home/CVE/Microsoft Exchange Server Remote Code Execution Vulnerability
CVE

CVE-2022-41082

Microsoft Exchange Server Remote Code Execution Vulnerability

Microsoft Exchange Server Remote Code Execution Vulnerability.

HIGH · CVSS 8 ⚠ CISA KEV EPSS 0.90862 Ransomware: known
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • Linked to known ransomware campaigns
  • SSVC exploitation status: active
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 0% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules10 YARA rules5
⬢

Required Remediation

Apply updates per vendor instructions.

◆

Threat Actors Linked

6
actorEarth Lusca
actorAPT27
actorHive
actorPlay
actorRedHotel
actorWhisperGate
⬡

Weakness Classification

CWE-502Deserialization of Untrusted Data
CWE-502Deserialization of Untrusted Data
▤

Affected Products & Versions

1
microsoft exchange serverall versions
⚠

Public Exploits & PoCs

1
pocpacketstormsecurity.com · Microsoft-Exchange-ProxyNotShell-Remote-Code-Execution.htmlpacketstormsecurity.com
◈

Detection Rules (IDS/IPS)

6
et-openET EXPLOIT Microsoft Exchange Remote Code Execution Attempt - OWASSRF (CVE-2022-41040, CVE-2022-41082)attempted-admin
snort-communitySERVER-WEBAPP Microsoft Exchange autodiscover server side request forgery attemptattempted-admin
snort-communitySERVER-WEBAPP Microsoft Exchange autodiscover server side request forgery attemptattempted-admin
snort-communitySERVER-WEBAPP Microsoft Exchange autodiscover server side request forgery attemptattempted-admin
snort-communitySERVER-WEBAPP Microsoft Exchange autodiscover server side request forgery attemptattempted-admin
snort-communitySERVER-WEBAPP Microsoft Exchange Server remote code execution attemptattempted-user
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
◈

Sigma Hunt Rules

10
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
relatedcriticalAntivirus Exploitation Framework Detection
relatedcriticalAntivirus Password Dumper Detection
relatedcriticalAntivirus Ransomware Detection
relatedcriticalWebshell Remote Command Execution
relatedcriticalPossible Coin Miner CPU Priority Param
relatedcriticalBad Opsec Powershell Code Artifacts
▣

Scoring & Timeline

8
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Oct 2022 · 01:15 AM
CVSS VectorCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

3
msrcCVE-2022-41082Remote Code Execution
cisaKEV-CVE-2022-41082
splunk-security-contentd436f9e7-0ee7-4a47-864b-6dea2c4e2752
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-41082PatchVendor Advisory
https://www.kb.cert.org/vuls/id/915563Third Party AdvisoryUS Government Resource
https://www.secpod.com/blog/microsoft-november-2022-patch-tuesday-patches-65-vulnerabilities-including-6-zero-days/Third Party Advisory
https://www.vicarius.io/vsociety/posts/cve-2022-41082-microsoft-exchange-server-remote-code-execution-vulnerability-detection-scriptThird Party Advisory
https://www.vicarius.io/vsociety/posts/cve-2022-41082-microsoft-exchange-server-remote-code-execution-vulnerability-mitigation-scriptThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-41082US Government Resource
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