Double free in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Oct 13, 2026 · NIST NVD

   Detected

   Double free in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.

2. Oct 14, 2026 · NIST NVD

   Updated

   Double free in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.

3. Oct 15, 2026 · CIRCL Vulnerability Lookup

   Updated

   Double free in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.

Affected

• cpe microsoft/windows 11 23h2version unspecified
• cpe microsoft/windows 11 24h2version unspecified
• cpe microsoft/windows 11 25h2version unspecified
• cpe microsoft/windows 11 26h1version unspecified
• vendor Microsoft Windows 11 Version 23H2version unspecified
• vendor Microsoft Windows 11 Version 24H2version unspecified
• vendor Microsoft Windows 11 Version 25H2version unspecified
• vendor Microsoft Windows 11 Version 26H2version unspecified
• vendor Microsoft Windows 11 version 23H2version unspecified
• vendor Microsoft Windows 11 version 26H1version unspecified
• vendor Microsoft Windows Server 2022version unspecified
• vendor Microsoft Windows Server 2025version unspecified

Sources

• CIRCL Vulnerability LookupVulnerability recordCVE-2026-97830

  Double free in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.

  vulnerability.circl.lu
• CVE.orgVulnerability recordCVE-2026-97830

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-97830

  30-day exploitation probability 0.9%

  first.org
• NIST NVDVulnerability recordCVE-2026-97830

  Double free in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.

  nvd.nist.gov

References

• Vendor Advisory · msrc.microsoft.com