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CVE-2025-21215General(microsoft / windows_10_1507)

LOWCVSS 4.6 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Secure Boot Security Feature Bypass Vulnerability

microsoft CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-125

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • windows_10_1507
  • windows_10_1607
  • windows_10_1809
  • windows_10_21h2

Threat summary

  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 2 signals
  • General: 1 classified signal
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-09-09); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
microsoft
Products
windows_10_1507windows_10_1607windows_10_1809windows_10_21h2windows_10_22h2windows_11_22h2windows_11_23h2windows_11_24h2windows_server_2008windows_server_2012

2 versions affected across 15 products

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-09-09: 1Mentions · 2026-09-10: 1Technical Details · 2026-09-09: 1Technical Details · 2026-09-10: 109-0909-10
Signal classification2 categories
General
150.0%
Disclosure
150.0%
Classification over time
DateTotalLabels
2026-09-091
General1
2026-09-101
Disclosure1
Full discourse2 posts
  • DFIR Radar@DFIR_Radar
    Disclosure

    Multiple BitLocker bypasses disclosed including CVE-2025-21215, which turns the Windows boot loader into a keylogger to capture the BitLocker PIN, and CVE-2025-21210 "CrashXTS." Check hiberfil.sys encryption status. #DFIR_Radar https://t.co/NYOYgqm1nX

    Post summary

    The tweet announces multiple BitLocker bypasses, specifically CVE-2025-21215 that turns the boot loader into a keylogger to capture the PIN and CVE-2025-21210 "CrashXTS," and advises checking the hiberfil.sys encryption status.

    10000218
    1.9K followersView on X
  • Maxim Suhanov@errno_fail
    General

    CVE-2025-21214 – a bug from the 90’s, CVE-2025-21215 – turning the Windows boot loader into the keylogger to capture the BitLocker’s PIN. But the talk wasn't limited to those! 2/2

    Post summary

    The passage mentions two CVE identifiers but only offers a brief, vague technical remark, with no indication of PoC, exploitation, patching, or active use.

    00000196
    1.5K followersView on X
CPE platform detail20 entries

20 of 20 entries

PartVendorProductVersionTarget SWTarget HW
OSmicrosoftwindows_10_1507--x64
OSmicrosoftwindows_10_1507--x86
OSmicrosoftwindows_10_1607--x64
OSmicrosoftwindows_10_1607--x86
OSmicrosoftwindows_10_1809--x64
OSmicrosoftwindows_10_1809--x86
OSmicrosoftwindows_10_21h2---
OSmicrosoftwindows_10_22h2---
OSmicrosoftwindows_11_22h2---
OSmicrosoftwindows_11_23h2---
OSmicrosoftwindows_11_24h2---
OSmicrosoftwindows_server_2008---
OSmicrosoftwindows_server_2008r2-x64
OSmicrosoftwindows_server_2012---
OSmicrosoftwindows_server_2012r2--
OSmicrosoftwindows_server_2016---
OSmicrosoftwindows_server_2019---
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2022_23h2---
OSmicrosoftwindows_server_2025--x64

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