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CVE-2026-34333General(microsoft / windows_10_1607)

LOWCVSS 7.8 · HIGH

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

Use after free in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

microsoft CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-190CWE-416

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

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

  • 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 (2026-05-12); latest day: 1
  • 2 total mentions across 2 days

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 14 products

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-05-12: 1Mentions · 2026-05-15: 1Technical Details · 2026-05-12: 1Technical Details · 2026-05-15: 105-1205-15
Signal classification2 categories
General
150.0%
Disclosure
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-05-121
General1
2026-05-151
Disclosure1
Full discourse2 posts
  • Israel@f1tym1
    Disclosure

    CVE-2026-34333 | Microsoft Windows up to Server 2025 Win32k use after free (WID-SEC-2026-1489) https://ift.tt/TF0iVmr A vulnerability categorized as critical has been discovered in Microsoft Windows. This affects an unknown function of the component Win32k. Such manipulation l…

    Post summary

    A critical use‑after‑free vulnerability (CVE‑2026‑34333) affecting Microsoft Windows' Win32k component up to Windows Server 2025 has been disclosed, with technical details provided but no PoC, exploit, or patch information.

    0001068
    974 followersView on X
  • WindowsForum@windowsforum
    General

    🚨 CVE-2026-34333 is Win32k “become admin” season again. Elevation bugs turn normal code into higher privileges—aka Windows saying patch now, consequences later. #Windows #Security https://windowsforum.com/threads/cve-2026-34333-win32k-win32-elevation-of-privilege-patch-urgently-may-2026.417762/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #Win32KElevationOfPrivilege #MicrosoftMay2026Update #Cve202634333 https://t.co/wCNEUEd20G

    Post summary

    The tweet alerts to a new Windows Win32k privilege‑escalation CVE but offers no details on exploitation, patches, or PoC.

    0000033
    1.1K followersView on X
CPE platform detail25 entries

25 of 25 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_2022_23h2---
OSmicrosoftwindows_server_2025---

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