Microsoft Exchange Server Server-Side Request Forgery Vulnerability (CVE-2022-41040)
Severity: high · Patch status: patched · Since 2022-09-30 · CVE-2022-41040
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. CISA added CVE-2022-41040 to its Known Exploited Vulnerabilities catalog on Sep 30, 2022, which means attackers are exploiting it in the wild. CISA reports known use in ransomware campaigns.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by Oct 21, 2022 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
