Out-of-bounds Read in Microsoft Windows 11 23h2
CVE-2026-33096
Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.012 (66.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: -0.001
Affected products
- Microsoft Windows 11 23h2
- Microsoft Windows 11 24h2
- Microsoft Windows 11 25h2
- Microsoft Windows 11 26h1
- Microsoft Windows 11 Version 22h3 — versions 10.0.22631.0
- Microsoft Windows 11 Version 23h2 — versions 10.0.22631.0
- Microsoft Windows 11 Version 24h2 — versions 10.0.26100.0
- Microsoft Windows 11 Version 25h2 — versions 10.0.26200.0
- Microsoft Windows 11 Version 26h1 — versions 10.0.28000.0
- Microsoft Windows Server 2022 — versions 10.0.20348.0
Weakness classification (CWE)
References
- HTTP.sys Denial of Service Vulnerability (vendor-advisory, patch, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-33096?
- CVE-2026-33096 is a high-severity vulnerability in Microsoft Windows 11 23h2, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-04-14.
- How severe is CVE-2026-33096?
- High severity. CVSS v3 base score is 7.5 out of 10.