Security Vulnerability Report
中文
CVE-2026-27913 CVSS 7.7 HIGH

CVE-2026-27913

Published: 2026-04-14 18:16:59
Last Modified: 2026-04-23 14:55:32

Description

Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature locally.

CVSS Details

CVSS Score
7.7
Severity
HIGH
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Configurations (Affected Products)

cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* - VULNERABLE
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* - VULNERABLE
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* - VULNERABLE
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* - VULNERABLE
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* - VULNERABLE
Windows BitLocker (具体受影响版本需参考微软安全公告)

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
# CVE-2026-27913 PoC Concept (Windows BitLocker Bypass) # This is a conceptual demonstration due to the nature of the vulnerability. # It simulates the logic of bypassing input validation to access the volume. import ctypes import sys def simulate_bypass(): # In a real scenario, this would interact with the BitLocker driver (fvevol.sys) # exploiting the improper input validation to skip security checks. print("[*] Attempting to interact with BitLocker driver...") # Simulate crafted input buffer crafted_input = b"\x00" * 128 # Malformed data structure try: # Hypothetical function call to vulnerable API # handle = ctypes.windll.kernel32.DeviceIoControl(..., crafted_input, ...) # If validation is bypassed, the volume would be mounted without decryption key print("[+] Input validation bypassed.") print("[+] Security feature check skipped.") print("[!] Volume access granted (Simulated).") return True except Exception as e: print(f"[-] Exploit failed: {e}") return False if __name__ == "__main__": print("CVE-2026-27913 Proof of Concept - Educational Use Only") simulate_bypass()

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2026-27913", "sourceIdentifier": "[email protected]", "published": "2026-04-14T18:16:58.860", "lastModified": "2026-04-23T14:55:32.397", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature locally."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "baseScore": 7.7, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.5, "impactScore": 5.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-20"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*", "matchCriteriaId": "A7DF96F8-BA6A-4780-9CA3-F719B3F81074"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*", "matchCriteriaId": "DB18C4CE-5917-401E-ACF7-2747084FD36E"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.14393.9060", "matchCriteriaId": "982DB0CA-5196-4E42-B2F7-994BE8179715"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.17763.8644", "matchCriteriaId": "647CF9B5-8898-469B-9C09-D372A7843187"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.20348.5020", "matchCriteriaId": "DC6837B7-5DFD-4AF7-B436-3C6FEF48BA60"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.25398.2274", "matchCriteriaId": "55A1F3AB-5299-4495-9A73-FDA23C6FD88D"}]}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27913", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}