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KEV · Actively exploited

CVE-2026-33824

CVE-2026-33824 is actively exploited (CISA KEV catalog) : critical severity (CVSS 9.8), 0 tracked apps concerned, none still exposed on their current version.

Severity (CVSS)
9.8

NVD scale

Exploitation
Confirmed

CISA KEV · EPSS predicts 1.6 %

Tracked apps
0
Still exposed
0

Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.

Attack vector : Network No privileges required No user interaction
Show raw CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS 1.62% predictive model; CISA confirms active exploitation percentile 75.0%

CISA Known Exploited Vulnerability

Added to KEV
2026-08-18
Remediation deadline
2026-08-21
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Ransomware
Unknown (not documented by CISA)

OS versions that fix this CVE

This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.

View on NVD ↗ CISA KEV catalog ↗ Advisory · msrc.microsoft.com

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