CVE-2026-97830

high

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

Vendor / product: Microsoft — windows 11 23h2

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

CVSS

7.5

7.5 (CVSS v3.1)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity source: NVD CVSS v3.1 (secure@microsoft.com)

Timeline (UTC)

Published: 2026-10-13 19:22

Modified: 2026-10-14 20:19

NVD status: Analyzed

Last synced 1 day ago

Verified against the source API 2026-10-27 07:00 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

microsoft / windows_11_23h2 <10.0.22631.7652

microsoft / windows_11_24h2 <10.0.26100.9711

microsoft / windows_11_25h2 <10.0.26200.9711

microsoft / windows_11_26h1 <10.0.28000.3231

microsoft / windows_11_26h2 <10.0.26300.9711

microsoft / windows_server_2022 <10.0.20348.5761

microsoft / windows_server_2025 <10.0.26100.33650

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

NVD CVE API 2.0 — fetched 2026-10-27 07:00 UTC · record ↗