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High-risk vulnerability digests

CVE-2023-21529

  • KEV
  • Ransomware

Microsoft Exchange Server Deserialization of Untrusted Data Vulnerability

Details

CISA date
2026-04-13
Affected versions
Exchange Server
Summary
Microsoft Exchange Server contains a deserialization of untrusted data that allows an authenticated attacker to achieve remote code execution.
Remediation
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Exploit info
No exploit-tagged NVD references in our cache; see the CISA KEV link below.

View on NVD  ·  CISA KEV catalog

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Information is aggregated from multiple authoritative sources for convenience; verify with NVD and vendors before operational decisions.