November 11, 2026

CVE Watchtower

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CVE-2026-85858NVD

Vulnerability Summary

Out-of-bounds read in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Severity Level
HIGH(7.8)
Published Date
Oct 13, 2026
Last Modified
Oct 29, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.25%Probability
Root Weakness (CWE)
CWE-125: Out-of-bounds Read ↗
The software reads data past the end, or before the beginning, of the intended buffer.
CVSS v3.1 Base Metrics — Score 7.8 (HIGH)
Attack VectorLocal
Attack ComplexityHigh
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Microsoft Windows 11 23h2 < 10.0.22631.7652
  • Microsoft Windows 11 24h2 < 10.0.26100.9711
  • Microsoft Windows 11 25h2 < 10.0.26200.9711
  • Microsoft Windows 11 26h1 < 10.0.28000.3231
  • Microsoft Windows 11 26h2 < 10.0.26300.9711
  • Microsoft Windows Server 2022 < 10.0.20348.5761
  • Microsoft Windows Server 2025 < 10.0.26100.33650
Patched Versions
  • Microsoft Windows 11 23h2 10.0.22631.7652
  • Microsoft Windows 11 24h2 10.0.26100.9711
  • Microsoft Windows 11 25h2 10.0.26200.9711
  • Microsoft Windows 11 26h1 10.0.28000.3231
  • Microsoft Windows 11 26h2 10.0.26300.9711
  • Microsoft Windows Server 2022 10.0.20348.5761
  • Microsoft Windows Server 2025 10.0.26100.33650
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🚫Ad-Free — Uninterrupted experience.
🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References