Vulnerability Report

CVE-2026-47291

RCE

Title: Integer overflow in Windows HTTP.sys

RCE

Proof Of Concept

PoC Available for CVE-2026-47291

CWE Category CWE-122

Published Date Jun 09, 2026

Modified Date Jun 10, 2026

Exploit Status Available

Score 9.8 CVSS v3.1

Exploit Probability (EPSS)

4.30%

Vulnerability Summary

CVE-2026-47291: Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network.

Impacted Vendors

microsoft 13

Reference Links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47291

CVSS v3.1

Source Entity [email protected]

Severity CRITICAL

9.8

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-47291 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/ManagerEmpty/CVE-2026-47291-httpsys

View Code

GitHub https://github.com/dhmosfunk/CVE-2026-49160-CVE-2026-47291-HTTP.sys

View Code

June 10, 2026 MODIFIED

Vulnerability data updated via NVD.

June 09, 2026 MODIFIED

Vulnerability data updated via NVD.

June 09, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.