VulnerabilityAnalyzed
CVE-2022-41040
Microsoft Exchange Server Server-Side Request Forgery Vulnerability
KEVHIGH 8.8EPSS 100.0%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 21 October 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Microsoft Exchange Server Elevation of Privilege Vulnerability
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 99.96% probability · 100th percentile
- CISA KEV
- Listed 30 September 2022 · due 21 October 2022 · used in ransomware campaigns
- Weakness
- CWE-918
- Affected
- microsoft/exchange server
- Source
- secure@microsoft.com
CISA notes
Apply updates per vendor instructions. 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-2022-41040
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41040Patch, Vendor Advisory
- http://packetstormsecurity.com/files/170066/Microsoft-Exchange-ProxyNotShell-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-41040Mitigation, Patch, Vendor Advisory
- https://www.kb.cert.org/vuls/id/915563Third Party Advisory, US Government Resource
- https://www.secpod.com/blog/microsoft-november-2022-patch-tuesday-patches-65-vulnerabilities-including-6-zero-days/Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-41040US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.