Windows Boot Loader Security Feature Bypass Vulnerability
CVSS score
6.0
EPSS probability
%0.2
Risk score
0.0
Published
2 mo ago
Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.
Impact on My Inventory
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Vulnerability description
DayBreach CVE AI Research
CVE-2026-58638 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.
Missing cryptographic step in Windows Boot Loader allows an authorized attacker to bypass a security feature locally.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-58638 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | microsoft | Windows 10 Version 1809 | View |
| 2 | microsoft | Windows 10 Version 21H2 | View |
| 3 | microsoft | Windows 10 Version 22H2 | View |
| 4 | microsoft | Windows 11 Version 24H2 | View |
| 5 | microsoft | Windows 11 Version 25H2 | View |
| 6 | microsoft | Windows 11 version 26H1 | View |
| 7 | microsoft | windows server 2012 | View |
| 8 | microsoft | Windows Server 2012 (Server Core installation) | View |
| 9 | microsoft | Windows Server 2012 R2 | View |
| 10 | microsoft | Windows Server 2012 R2 (Server Core installation) | View |
| 11 | microsoft | windows server 2016 | View |
| 12 | microsoft | Windows Server 2016 (Server Core installation) | View |
| 13 | microsoft | windows server 2019 | View |
| 14 | microsoft | Windows Server 2019 (Server Core installation) | View |
| 15 | microsoft | windows server 2022 | View |
| 16 | microsoft | windows server 2025 | View |
| 17 | microsoft | Windows Server 2025 (Server Core installation) | View |
| 18 | microsoft | windows 10 1809 | View |
| 19 | microsoft | windows 10 21h2 | View |
| 20 | microsoft | windows 10 22h2 | View |
| 21 | microsoft | windows 11 23h2 | View |
| 22 | microsoft | windows 11 24h2 | View |
| 23 | microsoft | windows 11 25h2 | View |
| 24 | microsoft | windows 11 26h1 | View |
| 25 | microsoft | windows server 2012 | View |
| 26 | microsoft | windows server 2012 | View |
| 27 | microsoft | windows server 2016 | View |
| 28 | microsoft | windows server 2019 | View |
| 29 | microsoft | windows server 2022 | View |
| 30 | microsoft | windows server 2025 | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 6.0 | CVSS 3.x | — | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C | Microsoft MSRC |
| 6.0 | CVSS V31 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N | NVD |
| 6.0 | CVSS V3_1 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C | CVE CNA |
| 5.5 | CVSS V31 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
21 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.
Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-58638 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-2026-58638 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
CVSS Vector Radar Chart
6.0 / 10Vulnerability Scoring Details
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:CYama doğrulandı
Weakness Type (CWE & CAPEC)
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Get this vulnerability through the API
Affected products, version ranges, exploitation status and patch information in a single request, with a free key.
curl -H "x-api-key: $DAYBREACH_API_KEY" \ "https://api.enginteksut.com.tr/api/v1/intel/cves/CVE-2026-58638"