[ CVE-2022-41040 · Published 3 Oct 2022 ]
Microsoft Exchange Server Server-Side Request Forgery Vulnerability
Exploited · CISA KEV CVSS 8.8
EPSS 100%Fix available
[ Why it matters ]Priority signals
- Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-09-30
- Known to be used in ransomware campaigns
- EPSS: 100% chance of exploitation in the next 30 days (higher than 100% of CVEs)
[ Description ]Official description
Microsoft Exchange Server Elevation of Privilege Vulnerability
CISA: Microsoft Exchange Server allows for server-side request forgery. Dubbed "ProxyNotShell," this vulnerability is chainable with CVE-2022-41082 which allows for remote code execution.
[ Fixes ]Fixes and patches
CISA required action (US federal deadline 21 Oct 2022): Apply updates per vendor instructions.
- Patch on msrc.microsoft.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
- Patch on portal.msrc.microsoft.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
[ References ]References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41040PatchVendor Advisory
- packetstormsecurity.com/files/170066/Microsoft-Exchange-ProxyNotShell-Remote-Code-Execu…ExploitThird Party AdvisoryVDB Entry
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-41040MitigationPatchVendor Advisory
- www.kb.cert.org/vuls/id/915563Third Party AdvisoryUS Government Resource
- www.secpod.com/blog/microsoft-november-2022-patch-tuesday-patches-65-vulnerabilities-in…Third Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource