cbcvebase.
CVE-2024-38148
published 2024-08-13

CVE-2024-38148: Windows Secure Channel Denial of Service Vulnerability

PriorityP347high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
31.81%
98.1th percentile
Windows Secure Channel Denial of Service Vulnerability

Affected

22 ranges
VendorProductVersion rangeFixed in
microsoftwindows_11_21h2< 10.0.22000.314710.0.22000.3147
microsoftwindows_11_22h2< 10.0.22621.403710.0.22621.4037
microsoftwindows_11_23h2< 10.0.22631.403710.0.22631.4037
microsoftwindows_11_24h2< 10.0.26100.145710.0.26100.1457
microsoftwindows_11_version_21h2>= 10.0.0 < 10.0.22000.314710.0.22000.3147
microsoftwindows_11_version_22h2>= 10.0.22621.0 < 10.0.22621.403710.0.22621.4037
microsoftwindows_11_version_22h3>= 10.0.22631.0 < 10.0.22631.403710.0.22631.4037
microsoftwindows_11_version_23h2>= 10.0.22631.0 < 10.0.22631.403710.0.22631.4037
microsoftwindows_11_version_24h2>= 10.0.26100.0 < 10.0.26100.145710.0.26100.1457
microsoftwindows_server_2022< 10.0.20348.265510.0.20348.2655
microsoftwindows_server_2022>= 10.0.20348.0 < 10.0.20348.265510.0.20348.2655
microsoftwindows_server_2022_23h2< 10.0.25398.108510.0.25398.1085
msrcwindows_11_version_21h2_for_arm64-based_systems
msrcwindows_11_version_21h2_for_x64-based_systems
msrcwindows_11_version_22h2_for_arm64-based_systems
msrcwindows_11_version_22h2_for_x64-based_systems
msrcwindows_11_version_23h2_for_arm64-based_systems
msrcwindows_11_version_23h2_for_x64-based_systems
msrcwindows_11_version_24h2_for_arm64-based_systems
msrcwindows_11_version_24h2_for_x64-based_systems
msrcwindows_server_2022
msrcwindows_server_2022_23h2_edition

Detection & IOCsextracted from sources · hover to see the quote

  • CVE-2024-38148 affects Windows Secure Channel (Schannel) / Windows Transport Security Layer (TLS) component — monitor for anomalous TLS handshake failures or DoS conditions targeting the Schannel stack on unpatched Windows systems
  • Exploitation assessed as 'More Likely' by Microsoft despite no known active exploitation at time of disclosure — prioritize detection of exploitation attempts against Schannel on exposed Windows endpoints
  • Copilot+ devices shipping with Windows 11 version 24H2 are affected and may not receive automatic updates — identify unpatched 24H2 hosts in the environment as high-priority targets
  • ·Vulnerability is a Denial of Service in Windows Secure Channel (Schannel/TLS) — no remote code execution; impact is limited to availability of TLS-dependent services
  • ·As of disclosure, the vulnerability has NOT been publicly disclosed or exploited in the wild, but Microsoft rates exploitation as 'More Likely' for the latest software release

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_msrc7.5HIGH
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