CVEvulnerability

CVE-2026-33824

9.8 CRITICAL Known exploited Published 2026-04-14 Modified 2026-09-25 Official page ↗

CISA Known Exploited Vulnerability

Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability — Microsoft Internet Key Exchange (IKE) Service Extensions

Microsoft Internet Key Exchange (IKE) Service Extensions contains a double free vulnerability that could enable remote code execution.

Added to KEV
2026-08-18
Remediation due
2026-08-21
Ransomware 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
Status
Analyzed
Published
2026-04-14
Last modified
2026-09-25
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-415

Description

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

Affected configurations

• microsoft windows 10 1607 (< 10.0.14393.9060) • microsoft windows 10 1809 (< 10.0.17763.8644) • microsoft windows 10 21h2 (< 10.0.19044.7184) • microsoft windows 10 22h2 (< 10.0.19045.7184) • microsoft windows 11 23h2 (< 10.0.22631.6936) • microsoft windows 11 24h2 (< 10.0.26100.8246) • microsoft windows 11 25h2 (< 10.0.26200.8246) • microsoft windows 11 26h1 (< 10.0.28000.1836) • microsoft windows server 2016 (< 10.0.14393.9060) • microsoft windows server 2019 (< 10.0.17763.8644) • microsoft windows server 2022 (< 10.0.20348.5020) • microsoft windows server 2022 23h2 (< 10.0.25398.2274) • microsoft windows server 2025 (< 10.0.26100.32690)

Related

Weakness · CWE (1)

References