CVE-2026-33824

CVE Enrichment

CVSS: 9.8 CRITICAL
EPSS: 1.62%
EPSS Percentile: 75.41%
CISA KEV: YES — Known Exploited Vulnerability

Description

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

Technical Details

CVSS Version: 3.1
CNA / NVD Source: secure@microsoft.com
Published: 15-Apr-2026 01:17
Last Modified: 26-Sep-2026 01:17
EPSS Date: 2026-10-12
CWE: CWE-415

CVSS Vector


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

CISA KEV Details

Date Added: 2026-08-18
Remediation Due: 2026-08-21
Known Ransomware Campaign Use: Unknown
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.
Notes: https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-33824 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-33824

Affected Products / Versions

microsoft / windows_10_1607
Version / affected range: * · before (exclusive) 10.0.14393.9060
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*
microsoft / windows_10_1607
Version / affected range: * · before (exclusive) 10.0.14393.9060
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
microsoft / windows_10_1809
Version / affected range: * · before (exclusive) 10.0.17763.8644
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
microsoft / windows_10_1809
Version / affected range: * · before (exclusive) 10.0.17763.8644
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
microsoft / windows_10_21h2
Version / affected range: * · before (exclusive) 10.0.19044.7184
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*
microsoft / windows_10_21h2
Version / affected range: * · before (exclusive) 10.0.19044.7184
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*
microsoft / windows_10_21h2
Version / affected range: * · before (exclusive) 10.0.19044.7184
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*
microsoft / windows_10_22h2
Version / affected range: * · before (exclusive) 10.0.19045.7184
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*
microsoft / windows_10_22h2
Version / affected range: * · before (exclusive) 10.0.19045.7184
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*
microsoft / windows_10_22h2
Version / affected range: * · before (exclusive) 10.0.19045.7184
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*
microsoft / windows_11_23h2
Version / affected range: * · before (exclusive) 10.0.22631.6936
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*
microsoft / windows_11_23h2
Version / affected range: * · before (exclusive) 10.0.22631.6936
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*
microsoft / windows_11_24h2
Version / affected range: * · before (exclusive) 10.0.26100.8246
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*
microsoft / windows_11_24h2
Version / affected range: * · before (exclusive) 10.0.26100.8246
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*
microsoft / windows_11_25h2
Version / affected range: * · before (exclusive) 10.0.26200.8246
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*
microsoft / windows_11_25h2
Version / affected range: * · before (exclusive) 10.0.26200.8246
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*
microsoft / windows_11_26h1
Version / affected range: * · before (exclusive) 10.0.28000.1836
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*
microsoft / windows_11_26h1
Version / affected range: * · before (exclusive) 10.0.28000.1836
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*
microsoft / windows_server_2016
Version / affected range: * · before (exclusive) 10.0.14393.9060
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
microsoft / windows_server_2019
Version / affected range: * · before (exclusive) 10.0.17763.8644
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
microsoft / windows_server_2022
Version / affected range: * · before (exclusive) 10.0.20348.5020
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
microsoft / windows_server_2022_23h2
Version / affected range: * · before (exclusive) 10.0.25398.2274
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*
microsoft / windows_server_2025
Version / affected range: * · before (exclusive) 10.0.26100.32690
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*

References

Last enrichment sync: 12-Oct-2026 21:57
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (2)

CVE (142)

Malware (8)

Threat Actors (9)

Vendors (40)

Products (83)

Tools (7)

Countries (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.