Summary
Microsoft Exchange Server contains a deserialization of untrusted data that allows an authenticated attacker to achieve remote code execution.
- Vendor
- Microsoft
- Product
- Exchange Server
- Added to KEV
- Apr 13, 2026
- Remediation due
- Apr 27, 2026 (US federal deadline)
- Ransomware use
- Known
- Weakness
- CWE-502
- EPSS
- 59.3% as of Nov 12
In the news
- No Asia-Pacific article names this CVE yet.
Linked
Actors named alongside it:
none
Incidents exploiting it:
- none recorded
References