Critical Alert 3 Active Exploits Detected Today

CVE-2025-39964 — Linux Kernel Race Condition Vulnerability →
CVE-2026-53266 — Linux Kernel Out-of-Bounds Write Vulnerability →
CVE-2025-39682 — Linux Kernel Improper Check for Unusual or Exceptional Conditions Vulnerability →
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September 20, 2026

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CVE-2026-94083NVD

Vulnerability Summary

Suricata before 8.0.7 has a DoH2 type confusion that can cause an invalid free, because cleanup code for the HTTP2 state is executed even though the actual state is HTTP1 (when there is a DoH2 request with an HTTP1 to HTTP2 upgrade). This requires app-layer.protocols.doh2 to be enabled, which is the default in 8.x versions.
Severity Level
CRITICAL(9.4)
Published Date
Sep 20, 2026
Last Modified
Sep 20, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
Data Pending
Root Weakness (CWE)
N/A
CVSS v3.1 Base Metrics
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityLow
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♾️Unlimited Vendors — Track your entire stack.
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⚙️Custom EPSS — Filter noise, focus on risk.
💬Webhooks — Slack & Teams integration.
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External References