Out-of-bounds Read in Windows Internet Information Services
CVE-2025-53805

7.5HIGH

Key Information:

Vendor

Microsoft
Status
Windows Server 2022
Windows 11 Version 22h2
Windows Server 2025 (server Core Installation)
Windows 11 Version 22h3
Vendor
CVE Published:
9 September 2025

What is CVE-2025-53805?

An out-of-bounds read vulnerability has been identified in Windows Internet Information Services (IIS), which could allow an unauthorized attacker to cause a denial-of-service condition over a network. This flaw can compromise the availability of web services hosted on affected IIS versions, resulting in potential disruptions for users. It is essential for administrators to apply the available updates and mitigations to protect against this vulnerability.

Affected Version(s)

Windows 11 version 22H2 ARM64-based Systems 10.0.22621.0 < 10.0.22621.5909

Windows 11 version 22H3 ARM64-based Systems 10.0.22631.0 < 10.0.22631.5909

Windows 11 Version 23H2 x64-based Systems 10.0.22631.0 < 10.0.22631.5909

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-53805 : Out-of-bounds Read in Windows Internet Information Services