VulnSocial

CVE-2026-56184Patch(microsoft / windows_10_21h2)

LOWCVSS 5.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft windows_10_21h2 systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Exposure of sensitive information to an unauthorized actor in Windows Win32K allows an authorized attacker to disclose information locally.

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-200

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_21h2
  • windows_10_22h2
  • windows_11_24h2
  • windows_11_25h2

Threat summary

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

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
microsoft
Products
windows_10_21h2windows_10_22h2windows_11_24h2windows_11_25h2windows_11_26h1windows_server_2022windows_server_2025

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-07-15: 1Patch / Workaround · 2026-07-15: 1Technical Details · 2026-07-15: 107-15
Signal classification1 categories
Patch
1100.0%
Referenced assets1 URL
Full discourse1 post
  • Windows Forum@windowsforum
    Patch

    🪟 Microsoft calls this Win32k data leak “Medium,” but attackers still love unpatched Windows. Install the July updates—because sensitive info shouldn’t be a local software feature. https://windowsforum.com/threads/cve-2026-56184-install-july-updates-to-fix-win32k-data-leak.438783/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #WindowsSecurity #PatchManagement #Win32KVulnerability #Cve202656184 https://t.co/MinRGNchIi

    Post summary

    The tweet highlights the CVE‑2026‑56184 Win32k data leak and urges users to apply the July patch, focusing on mitigation rather than exploitation details.

    0000016
    1.2K followersView on X
CPE platform detail7 entries

7 of 7 entries

PartVendorProductVersionTarget SWTarget HW
OSmicrosoftwindows_10_21h2---
OSmicrosoftwindows_10_22h2---
OSmicrosoftwindows_11_24h2---
OSmicrosoftwindows_11_25h2---
OSmicrosoftwindows_11_26h1---
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2025---

Explore more

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