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CVE-2026-45588General(microsoft / windows_10_1607)

LOWCVSS 7.9 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Patch microsoft windows_10_1607 systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-693

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

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

  • windows_10_1607
  • windows_10_1809
  • windows_10_21h2
  • windows_10_22h2

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Affected systems

Vendors
microsoft
Products
windows_10_1607windows_10_1809windows_10_21h2windows_10_22h2windows_11_23h2windows_11_24h2windows_11_25h2windows_11_26h1windows_server_2012windows_server_2016

2 versions affected across 13 products

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-06-09: 2Patch / Workaround · 2026-06-09: 1Technical Details · 2026-06-09: 106-09
Signal classification2 categories
General
150.0%
Patch
150.0%
Referenced assets2 URLs
Full discourse2 posts
  • Alon Leviev@alon_leviev
    Patch

    10 Secure Boot & BitLocker bypasses I reported are fixed in today's Patch Tuesday: CVE-2026-45588, CVE-2026-45654, CVE-2026-45655, CVE-2026-45656, CVE-2026-48568, CVE-2026-48570, CVE-2026-48573, CVE-2026-48575, CVE-2026-48576, CVE-2026-48578 Advisory: https://msrc.microsoft.com/update-guide/releaseNote/2026-Jun

    Post summary

    Microsoft released an advisory for Patch Tuesday 2026, fixing ten Secure Boot and BitLocker bypass CVEs; the post provides the CVE list and a link to the official update guide.

    315083196.1K
    1.5K followersView on X
  • Hugo | DevOps | Cybersecurity 🇱🇻@HugoValters
    General

    CVE-2026-45588 - Local security bypass in Windows Secure Boot via Protection mechanism failure. CVSS 7.9. Unpatched. Review your security posture. #CVE #Microsoft #InfoSec A #CyberCommunity HUB for beginers, med level and experts and #developers https://www.valtersit.com/cve/CVE-2026-45588

    Post summary

    The post announces CVE-2026-45588 as an unpatched local security bypass in Windows Secure Boot, with CVSS 7.9, but provides no proof of concept, exploit code, or patch information.

    0000056
    920 followersView on X
CPE platform detail24 entries

24 of 24 entries

PartVendorProductVersionTarget SWTarget HW
OSmicrosoftwindows_10_1607--x64
OSmicrosoftwindows_10_1607--x86
OSmicrosoftwindows_10_1809--x64
OSmicrosoftwindows_10_1809--x86
OSmicrosoftwindows_10_21h2--arm64
OSmicrosoftwindows_10_21h2--x64
OSmicrosoftwindows_10_21h2--x86
OSmicrosoftwindows_10_22h2--arm64
OSmicrosoftwindows_10_22h2--x64
OSmicrosoftwindows_10_22h2--x86
OSmicrosoftwindows_11_23h2--arm64
OSmicrosoftwindows_11_23h2--x64
OSmicrosoftwindows_11_24h2--arm64
OSmicrosoftwindows_11_24h2--x64
OSmicrosoftwindows_11_25h2--arm64
OSmicrosoftwindows_11_25h2--x64
OSmicrosoftwindows_11_26h1--arm64
OSmicrosoftwindows_11_26h1--x64
OSmicrosoftwindows_server_2012---
OSmicrosoftwindows_server_2012r2--
OSmicrosoftwindows_server_2016---
OSmicrosoftwindows_server_2019---
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2025--x64

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