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High 7.5Published Apr 14, 2026
CVE-2026-33096HTTP.sys Denial of Service Vulnerability
Updated under an hour ago ()
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It affects Microsoft Windows 11 version 23H2 and 6 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
- Weakness (CWE)
- CWE-125
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Microsoft Windows 11 version 23H2 microsoft:windows_11_23h2 | from 10.0.22631.0 before 10.0.22631.6936 | CNA record |
Microsoft Windows 11 Version 24H2 microsoft:windows_11_24h2 | from 10.0.26100.0 before 10.0.26100.8246 | CNA record |
Microsoft Windows 11 Version 25H2 microsoft:windows_11_25h2 | from 10.0.26200.0 before 10.0.26200.8246 | CNA record |
Microsoft Windows 11 version 26H1 microsoft:windows_11_26h1 | from 10.0.28000.0 before 10.0.28000.1836 | CNA record |
Microsoft Windows Server 2022 microsoft:windows_server_2022 (from the name) | from 10.0.20348.0 before 10.0.20348.5020 | CNA record |
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) microsoft:windows_server_2022_23h2 | from 10.0.25398.0 before 10.0.25398.2274 | CNA record |
Microsoft Windows Server 2025 microsoft:windows_server_2025 (from the name) | from 10.0.26100.0 before 10.0.26100.32690 | CNA record |
microsoft windows_11_23h2 microsoft:windows_11_23h2 | before 10.0.22631.6936; before 10.0.22631.6936 | NVD |
microsoft windows_11_24h2 microsoft:windows_11_24h2 | before 10.0.26100.8246; before 10.0.26100.8246 | NVD |
microsoft windows_11_25h2 microsoft:windows_11_25h2 | before 10.0.26200.8246; before 10.0.26200.8246 | NVD |
microsoft windows_11_26h1 microsoft:windows_11_26h1 | before 10.0.28000.1836; before 10.0.28000.1836 | NVD |
microsoft windows_server_2022 microsoft:windows_server_2022 | before 10.0.20348.5020 | NVD |
microsoft windows_server_2022_23h2 microsoft:windows_server_2022_23h2 | before 10.0.25398.2274 | NVD |
microsoft windows_server_2025 microsoft:windows_server_2025 | before 10.0.26100.32690 | NVD |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33096vendor-advisory, patch, mitigation
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.