CVE-2026-62815Critical· 9.8▾ MidnightUse after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 0.2 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Sep 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
1.0%
1.0% → 1.2%
Last analysed / modified upstream
Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7517windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7517windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.9168windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.9168windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.2704windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5499windows_server_2025 >= 10.0.26100.0 < 10.0.26100.33296windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.33296Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
Microsoft.Native.Quic.MsQuic.OpenSSL >= 2.5.3, < 2.5.10Microsoft.Native.Quic.MsQuic.Schannel >= 2.5.3, < 2.5.10Microsoft.Native.Quic.MsQuic.OpenSSL < 2.4.19Microsoft.Native.Quic.MsQuic.Schannel < 2.4.19Patched in:
Microsoft.Native.Quic.MsQuic.OpenSSL 2.5.10Microsoft.Native.Quic.MsQuic.Schannel 2.5.10Microsoft.Native.Quic.MsQuic.OpenSSL 2.4.19Microsoft.Native.Quic.MsQuic.Schannel 2.4.19Connected by shared product, vendor, weakness, or advisory.
CVE-2026-72936High· 8.1Use after free in Windows SMB Client allows an unauthorized attacker to execute code over a network.
CVE-2026-69740High· 8.8Use after free in Windows Hello allows an authorized attacker to elevate privileges locally.
CVE-2026-69775High· 7.1Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges over a network.
CVE-2026-69597High· 7.1Use after free in Windows HTTP.sys allows an authorized attacker to elevate privileges over a network.
CVE-2026-69392High· 7.8Use after free in Windows Shell allows an authorized attacker to elevate privileges locally.
CVE-2026-69300High· 7.0Use after free in Windows Push Notifications allows an authorized attacker to elevate privileges locally.