CVE-2021-31196VulnerabilityPublished 08/21/2024Updated 10/24/2026
CVE-2021-31196: Microsoft Exchange Server Information Disclosure Vulnerability
Affects Microsoft Exchange ServerSource CISA KEV
Severity
HighNo CVSS score published yet
- Exploitation
Actively exploited – in CISA KEV since 08/21/2024
- KEV deadline
- 09/11/2024
- EPSS
- 54.1% chance of exploitation in 30 days – higher than 99% of CVEs
What to do
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Description
Microsoft Exchange Server contains an information disclosure vulnerability that allows for remote code execution.