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CVE-2026-70284

MEDIUM 5.5

Published 2026-10-13 · Last modified 2026-10-25

Use of uninitialized resource in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.

NO EXPLOITATION SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.5%chance of exploitation in 30 days · 40th percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

5.5CVSS 3.1 · MEDIUM

  • ConfidentialityHigh
  • IntegrityNone
  • AvailabilityNone

What an attacker needs

  • ⚠Access: Requires local access to the host
  • ⚠Privileges: Requires a low-privilege account
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Microsoft

Products Windows 10 Version 1607 Windows 10 Version 1809 Windows 10 Version 21h2 Windows 10 Version 22h2 Windows 11 Version 23h2 Windows 11 Version 24h2 Windows 11 Version 25h2 Windows 11 Version 26h1 Windows 11 Version 26h2 Windows Server 2012 Windows Server 2012 (Server Core Installation) Windows Server 2012 R2

Weakness (CWE)

  • CWE-908: : Use of Uninitialized Resource

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

References and research data (JSON)

Known Affected Software Configurations

VendorProductVersion range
MicrosoftWindows 10 1607< 10.0.14393.9612
MicrosoftWindows 10 1607< 10.0.14393.9612
MicrosoftWindows 10 1809< 10.0.17763.9376
MicrosoftWindows 10 1809< 10.0.17763.9376
MicrosoftWindows 10 21h2< 10.0.19044.7807
MicrosoftWindows 10 21h2< 10.0.19044.7807
MicrosoftWindows 10 21h2< 10.0.19044.7807
MicrosoftWindows 10 22h2< 10.0.19045.7807
MicrosoftWindows 10 22h2< 10.0.19045.7807
MicrosoftWindows 10 22h2< 10.0.19045.7807
MicrosoftWindows 11 23h2< 10.0.22631.7652
MicrosoftWindows 11 23h2< 10.0.22631.7652
MicrosoftWindows 11 24h2< 10.0.26100.9711
MicrosoftWindows 11 24h2< 10.0.26100.9711
MicrosoftWindows 11 25h2< 10.0.26200.9711
MicrosoftWindows 11 25h2< 10.0.26200.9711
MicrosoftWindows 11 26h1< 10.0.28000.3231
MicrosoftWindows 11 26h1< 10.0.28000.3231
MicrosoftWindows 11 26h2< 10.0.26300.9711
MicrosoftWindows 11 26h2< 10.0.26300.9711
MicrosoftWindows Server 2012*
MicrosoftWindows Server 2012r2
MicrosoftWindows Server 2016< 10.0.14393.9612
MicrosoftWindows Server 2019< 10.0.17763.9376
MicrosoftWindows Server 2022< 10.0.20348.5761
MicrosoftWindows Server 2025< 10.0.26100.33650

All CVSS metrics

  • MEDIUM 5.5 v3.1 · CNA Primary
    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
  • MEDIUM 5.5 v3.1 · NVD Secondary
    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

Patches & mitigations

Advisories

Sources: NVD · CVE.org · EPSS