CVE-2026-47291
CRITICAL EPSS 97.3%
Published Jun 9, 20262w ago · Modified Jun 17, 20261w ago
9.8 CVSS 3.1
Published Jun 9, 2026 2w ago
Last Modified Jun 17, 2026 1w ago
Description
Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High
Threat Intelligence
EPSS Exploit Probability
97.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 2
CWE-122
CWE-190 Integer Overflow or Wraparound Numeric Error
Affected Products 24
| Vendor | Product | Version | Range |
|---|---|---|---|
| microsoft | windows_10_1607 | * | <10.0.14393.9234 |
| microsoft | windows_10_1607 | * | <10.0.14393.9234 |
| microsoft | windows_10_1809 | * | <10.0.17763.8880 |
| microsoft | windows_10_1809 | * | <10.0.17763.8880 |
| microsoft | windows_10_21h2 | * | <10.0.19044.7417 |
| microsoft | windows_10_21h2 | * | <10.0.19044.7417 |
| microsoft | windows_10_21h2 | * | <10.0.19044.7417 |
| microsoft | windows_10_22h2 | * | <10.0.19045.7417 |
| microsoft | windows_10_22h2 | * | <10.0.19045.7417 |
| microsoft | windows_10_22h2 | * | <10.0.19045.7417 |
| microsoft | windows_11_23h2 | * | <10.0.22631.7219 |
| microsoft | windows_11_23h2 | * | <10.0.22631.7219 |
| microsoft | windows_11_24h2 | * | <10.0.26100.8655 |
| microsoft | windows_11_24h2 | * | <10.0.26100.8655 |
| microsoft | windows_11_25h2 | * | <10.0.26200.8655 |
| microsoft | windows_11_25h2 | * | <10.0.26200.8655 |
| microsoft | windows_11_26h1 | * | <10.0.28000.2269 |
| microsoft | windows_11_26h1 | * | <10.0.28000.2269 |
| microsoft | windows_server_2012 | * | any |
| microsoft | windows_server_2012 | r2 | any |
| microsoft | windows_server_2016 | * | <10.0.14393.9234 |
| microsoft | windows_server_2019 | * | <10.0.17763.8880 |
| microsoft | windows_server_2022 | * | <10.0.20348.5256 |
| microsoft | windows_server_2025 | * | <10.0.26100.32995 |
References 1
- msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47291
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.