CVE-2021-31207
Microsoft Exchange Server Security Feature Bypass Vulnerability
- Published May 11, 2021
- CVSS 6.6 medium
- 99.8% chance of exploitation in the next 30 days (EPSS)
- In CISA's Known Exploited Vulnerabilities catalog
- A Metasploit module exploits it
- A fix is available
Affected software
In the news
- APT and financial attacks on industrial organizations in Q4 2025 Kaspersky ICS CERT ·