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6.8
MEDIUM CVSS 3.1
CVE-2023-21563
BitLocker Security Feature Bypass Vulnerability
Overview
Description

BitLocker Security Feature Bypass Vulnerability

Details
INFO

Published Date :

Jan. 10, 2023, 10:15 p.m.

Last Modified :

June 17, 2026, 5:33 a.m.

Remotely Exploit :

No

Source :

[email protected]
Impact
Affected Products

The following products are affected by CVE-2023-21563 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft windows_7
2 Microsoft windows_8.1
3 Microsoft windows_rt_8.1
4 Microsoft windows_server_2008
5 Microsoft windows_server_2012
6 Microsoft windows_server_2016
7 Microsoft windows_server_2019
8 Microsoft windows_10_1607
9 Microsoft windows_10_1809
10 Microsoft windows_10_20h2
11 Microsoft windows_10_21h2
12 Microsoft windows_10_22h2
13 Microsoft windows_server_2022
14 Microsoft windows_11_21h2
15 Microsoft windows_11_22h2
16 Microsoft windows_10_1507
17 Microsoft windows
18 Microsoft windows_server_2012_r2
19 Microsoft windows_server_2008_r2
20 Microsoft windows_server_2008_sp2
: Total Affected Vendor : 1 | Products : 20
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
CVSS 3.1 MEDIUM [email protected]
Solution
A vulnerability in BitLocker could allow security feature bypass.
  • Apply the appropriate security update or cumulative update for your operating system.
  • Reboot the system if prompted.
Public PoC/Exploit Available at Github

CVE-2023-21563 has a 12 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-21563.

URL Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21563
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21563
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-21563 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-21563 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
gtkramer/windows-setup-scripts

None

PowerShell

Updated: 1 week, 2 days ago
0 stars 0 fork 0 watcher
Born at : July 6, 2026, 5:52 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
LR2006-Robot/bitpixie

Cracking BitLocker encryption based on CVE-2023-21563 vulnerability

PowerShell Shell Batchfile

Updated: 1 month, 1 week ago
2 stars 0 fork 0 watcher
Born at : May 23, 2026, 2:45 p.m. This repo has been linked 2 different CVEs too.
Profile Photo
LR2006-Robot/HardwareSecurityBlog.github.io

my new blog about hardware security!

HTML JavaScript CSS

Updated: 1 month, 1 week ago
0 stars 0 fork 0 watcher
Born at : May 12, 2026, 12:54 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
c-sprinks/bitlocker-bypass-research

BitLocker full-disk encryption bypass research using CVE-2023-21563 (BitPixie). Methodology, exploit chain, and defensive recommendations.

Updated: 3 days, 12 hours ago
2 stars 0 fork 0 watcher
Born at : April 12, 2026, 2:14 a.m. This repo has been linked 2 different CVEs too.
Profile Photo
SeinlyXz/bitpixie

None

Makefile Shell Batchfile C PowerShell

Updated: 5 months, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : Jan. 20, 2026, 5:36 a.m. This repo has been linked 3 different CVEs too.
Profile Photo
c-sprinks/bitlocker-bypass-research

cyber security research

Updated: 3 months, 1 week ago
1 stars 0 fork 0 watcher
Born at : Oct. 26, 2025, 8:52 p.m. This repo has been linked 2 different CVEs too.
Profile Photo
0pts/0pts-bitpixie

Bitlocker decryptor - bitpixie proof-of-concept

Makefile C Batchfile Perl Shell Dockerfile

Updated: 11 months, 3 weeks ago
0 stars 2 fork 2 watcher
Born at : June 23, 2025, 9:19 a.m. This repo has been linked 2 different CVEs too.
Profile Photo
zulloper/cve-poc

CVE POC repo 자동 수집기

Python

Updated: 1 month, 1 week ago
13 stars 5 fork 5 watcher
Born at : June 8, 2025, 3:07 p.m. This repo has been linked 338 different CVEs too.
Profile Photo
YoyoCrafts/bitpixie

None

Shell Batchfile

Updated: 1 year, 2 months ago
0 stars 0 fork 0 watcher
Born at : May 15, 2025, 8:38 a.m. This repo has been linked 2 different CVEs too.
Profile Photo
martanne/bitpixie

Bitpixie exploitation PoC

bitlocker bitpixie cve-2023-21563

Shell Batchfile Makefile C PowerShell

Updated: 8 months, 2 weeks ago
72 stars 15 fork 15 watcher
Born at : Feb. 3, 2025, 10:01 a.m. This repo has been linked 3 different CVEs too.
Profile Photo
andigandhi/bitpixie

bitpixie Proof of Concept - Bitlocker Decryptor

cve-2023-21563 cve-2024-1086 bitpixie bitlocker

Shell Batchfile

Updated: 9 months, 3 weeks ago
94 stars 22 fork 22 watcher
Born at : Dec. 29, 2024, 5:41 p.m. This repo has been linked 2 different CVEs too.
Profile Photo
126789t/poc_everyday

自动搜集每天的漏洞poc和exp信息。

Updated: 1 year, 5 months ago
8 stars 2 fork 2 watcher
Born at : Dec. 11, 2024, 12:32 a.m. This repo has been linked 91 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-21563 vulnerability anywhere in the article.

  • The Hacker News
⚡ Weekly Recap: Oracle 0-Day, BitLocker Bypass, VMScape, WhatsApp Worm & More

The cyber world never hits pause, and staying alert matters more than ever. Every week brings new tricks, smarter attacks, and fresh lessons from the field. This recap cuts through the noise to share ... Read more

Published Date: Oct 06, 2025 (9 months, 1 week ago)
  • CybersecurityNews
Hackers Can Exploit Bitpixie Vulnerability to Bypass BitLocker Encryption and Escalate Privileges

A critical vulnerability in Windows Boot Manager, known as bitpixie, enables attackers to bypass BitLocker drive encryption and escalate local privileges on Windows systems. The vulnerability affects ... Read more

Published Date: Sep 17, 2025 (9 months, 4 weeks ago)
  • Daily CyberSecurity
Microsoft Fixes Bug That Caused Windows Server Clusters to Fail

A Windows Server update released in July caused cluster disruption errors, yet Microsoft did not publicly disclose the issue at the time, instead instructing affected customers to contact Microsoft Te ... Read more

Published Date: Aug 15, 2025 (11 months ago)
  • Cybersecurity News
Patched But Still Vulnerable: Windows BitLocker Encryption Bypassed Again

A revelation emerged from the Chaos Communication Congress (CCC) last week, shaking the foundations of Windows’ trusted BitLocker encryption. Security researcher Thomas Lambertz, in his presentation “ ... Read more

Published Date: Jan 03, 2025 (1 year, 6 months ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2023-21563 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    Jun. 17, 2026

    Action Type Old Value New Value
    Added Affected [{'vendor': 'Microsoft', 'product': 'Windows 10 Version 1809', 'versions': [{'status': 'affected', 'version': '10.0.17763.0', 'lessThan': '10.0.17763.3887', 'versionType': 'custom'}], 'platforms': ['32-bit Systems', 'x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows 10 Version 1809', 'versions': [{'status': 'affected', 'version': '10.0.0', 'lessThan': '10.0.17763.3887', 'versionType': 'custom'}], 'platforms': ['ARM64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows Server 2019', 'versions': [{'status': 'affected', 'version': '10.0.17763.0', 'lessThan': '10.0.17763.3887', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows Server 2019 (Server Core installation)', 'versions': [{'status': 'affected', 'version': '10.0.17763.0', 'lessThan': '10.0.17763.3887', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows Server 2022', 'versions': [{'status': 'affected', 'version': '10.0.20348.0', 'lessThan': '10.0.20348.1487', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows 10 Version 20H2', 'versions': [{'status': 'affected', 'version': '10.0.0', 'lessThan': '10.0.19042.2486', 'versionType': 'custom'}], 'platforms': ['32-bit Systems', 'ARM64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows 11 version 21H2', 'versions': [{'status': 'affected', 'version': '10.0.0', 'lessThan': '10.0.22000.1455', 'versionType': 'custom'}], 'platforms': ['x64-based Systems', 'ARM64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows 10 Version 21H2', 'versions': [{'status': 'affected', 'version': '10.0.19043.0', 'lessThan': '10.0.19044.2486', 'versionType': 'custom'}], 'platforms': ['32-bit Systems', 'ARM64-based Systems', 'x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows 11 version 22H2', 'versions': [{'status': 'affected', 'version': '10.0.22621.0', 'lessThan': '10.0.22621.1105', 'versionType': 'custom'}], 'platforms': ['ARM64-based Systems', 'x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows 10 Version 22H2', 'versions': [{'status': 'affected', 'version': '10.0.19045.0', 'lessThan': '10.0.19045.2486', 'versionType': 'custom'}], 'platforms': ['x64-based Systems', 'ARM64-based Systems', '32-bit Systems']}, {'vendor': 'Microsoft', 'product': 'Windows 10 Version 1507', 'versions': [{'status': 'affected', 'version': '10.0.10240.0', 'lessThan': '10.0.10240.19685', 'versionType': 'custom'}], 'platforms': ['32-bit Systems', 'x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows 10 Version 1607', 'versions': [{'status': 'affected', 'version': '10.0.14393.0', 'lessThan': '10.0.14393.5648', 'versionType': 'custom'}], 'platforms': ['32-bit Systems', 'x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows Server 2016', 'versions': [{'status': 'affected', 'version': '10.0.14393.0', 'lessThan': '10.0.14393.5648', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows Server 2016 (Server Core installation)', 'versions': [{'status': 'affected', 'version': '10.0.14393.0', 'lessThan': '10.0.14393.5648', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows 7', 'versions': [{'status': 'affected', 'version': '6.1.0', 'lessThan': '6.1.7601.26321', 'versionType': 'custom'}], 'platforms': ['32-bit Systems']}, {'vendor': 'Microsoft', 'product': 'Windows 7 Service Pack 1', 'versions': [{'status': 'affected', 'version': '6.1.0', 'lessThan': '6.1.7601.26321', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows 8.1', 'versions': [{'status': 'affected', 'version': '6.3.0', 'lessThan': '6.3.9600.20778', 'versionType': 'custom'}], 'platforms': ['32-bit Systems', 'x64-based Systems', 'ARM64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows Server 2008 Service Pack 2', 'versions': [{'status': 'affected', 'version': '6.0.6003.0', 'lessThan': '6.0.6003.21872', 'versionType': 'custom'}], 'platforms': ['32-bit Systems']}, {'vendor': 'Microsoft', 'product': 'Windows Server 2008 Service Pack 2 (Server Core installation)', 'versions': [{'status': 'affected', 'version': '6.0.6003.0', 'lessThan': '6.0.6003.21872', 'versionType': 'custom'}], 'platforms': ['32-bit Systems', 'x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows Server 2008 Service Pack 2', 'versions': [{'status': 'affected', 'version': '6.0.6003.0', 'lessThan': '6.0.6003.21872', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows Server 2008 R2 Service Pack 1', 'versions': [{'status': 'affected', 'version': '6.1.7601.0', 'lessThan': '6.1.7601.26321', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows Server 2008 R2 Service Pack 1 (Server Core installation)', 'versions': [{'status': 'affected', 'version': '6.1.7601.0', 'lessThan': '6.1.7601.26321', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows Server 2012', 'versions': [{'status': 'affected', 'version': '6.2.9200.0', 'lessThan': '6.2.9200.24075', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows Server 2012 (Server Core installation)', 'versions': [{'status': 'affected', 'version': '6.2.9200.0', 'lessThan': '6.2.9200.24075', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows Server 2012 R2', 'versions': [{'status': 'affected', 'version': '6.3.9600.0', 'lessThan': '6.3.9600.20778', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}, {'vendor': 'Microsoft', 'product': 'Windows Server 2012 R2 (Server Core installation)', 'versions': [{'status': 'affected', 'version': '6.3.9600.0', 'lessThan': '6.3.9600.20778', 'versionType': 'custom'}], 'platforms': ['x64-based Systems']}]
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21563
  • CVE Modified by [email protected]

    May. 29, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Apr. 27, 2023

    Action Type Old Value New Value
    Changed Description BitLocker Security Feature Bypass Vulnerability. BitLocker Security Feature Bypass Vulnerability
    Removed Reference https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21563 [Patch, Vendor Advisory]
    Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21563 [No Types Assigned]
  • Initial Analysis by [email protected]

    Jan. 18, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21563 No Types Assigned https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21563 Patch, Vendor Advisory
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration OR *cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_11_21h2:-:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_11_21h2:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_11_22h2:-:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_11_22h2:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 6.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
EPSS
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

1.55 }} 0.87%

score

0.71728

percentile