Skip to main content

Severity by source

Vendor (microsoft) PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CIRCL (temporal)
8.5 HIGH
cvss

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

8
Added to CISA KEV
Aug 18, 2026 - 17:48 CISA
Analysis Updated
Apr 17, 2026 - 15:32 vuln.today
v2 (cvss_changed)
Re-analysis Queued
Apr 17, 2026 - 15:22 vuln.today
cvss_changed
Analysis Generated
Apr 14, 2026 - 19:37 vuln.today
EUVD ID Assigned
Apr 14, 2026 - 17:46 euvd
EUVD-2026-22641
Analysis Generated
Apr 14, 2026 - 17:46 vuln.today
Patch released
Apr 14, 2026 - 17:46 nvd
Patch available
CVE Published
Apr 14, 2026 - 16:58 nvd
CRITICAL 9.8

DescriptionCVE.org

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

AnalysisAI

Remote code execution in Windows IKE Extension (Internet Key Exchange) via double free memory corruption allows unauthenticated network attackers to execute arbitrary code on Windows 10 (1607-22H2), Windows 11 (22H3-26H1), and Windows Server (2016-2025). CVSS 9.8 critical severity with network vector requiring no authentication or user interaction. Vendor patch released by Microsoft addresses CWE-415 double free weakness. EPSS score of 0.07% (21st percentile) suggests low observed exploitation probability despite critical severity rating, indicating this may be a targeted or difficult-to-exploit vulnerability in production environments. No CISA KEV listing or public POC identified at time of analysis.

Technical ContextAI

Windows IKE Extension implements the Internet Key Exchange protocol used for establishing IPsec VPN tunnels and secure network communications. The vulnerability stems from a double free condition (CWE-415) where memory is deallocated twice, leading to heap corruption that can be leveraged for arbitrary code execution. IKE operates at the network layer handling cryptographic key negotiation, typically over UDP port 500/4500. The affected component spans Windows 10 version 1607 (released 2016) through current Windows 11 26H1 and Windows Server 2025, indicating a long-standing code defect in the IKE implementation. CPE strings identify affected products across consumer (Windows 10/11) and enterprise (Windows Server 2016/2019/2022/2025) editions. Double free vulnerabilities occur when improper error handling or race conditions cause the same memory pointer to be freed multiple times, corrupting heap metadata structures that attackers can manipulate to achieve control flow hijacking.

RemediationAI

Apply Microsoft security updates released in the monthly patch cycle to upgrade Windows to the fixed versions: Windows 10 1607/Server 2016 to build 10.0.14393.9060 or later, Windows 10 1809/Server 2019 to 10.0.17763.8644 or later, Windows 10 21H2 to 10.0.19044.7184 or later, Windows 10 22H2 to 10.0.19045.7184 or later, Windows 11 22H3/23H2 to 10.0.22631.6936 or later, Windows 11 24H2/Server 2025 to 10.0.26100.32690 or later, Windows 11 25H2 to 10.0.26200.8246 or later, Windows 11 26H1 to 10.0.28000.1836 or later, Windows Server 2022 23H2 to 10.0.25398.2274 or later. Download patches from Microsoft Update Catalog or apply via Windows Update, WSUS, or Configuration Manager. If immediate patching is not feasible, implement compensating controls: disable IKE/IPsec services if not required for VPN connectivity (trade-off: breaks IPsec-dependent applications), restrict UDP ports 500 and 4500 at network perimeter firewalls to only trusted VPN gateway IP addresses (trade-off: may block legitimate remote access), or deploy network-based IPS signatures to detect malformed IKE packets (trade-off: potential false positives and throughput impact). Full security advisory and patch download links at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33824.

CVE-2026-56155 HIGH POC
7.8 Jul 14

Local privilege escalation in Microsoft Active Directory Federation Services (AD FS) lets an already-authenticated low-p

CVE-2026-32202 MEDIUM POC
4.3 Apr 14

Windows Shell protection mechanism failure (CVE-2026-32202) allows remote attackers to perform spoofing attacks over a n

CVE-2026-49798 CRITICAL POC
9.3 Jul 14

Local privilege escalation in the Microsoft Windows Kernel allows an unauthorized attacker to gain elevated (SYSTEM-leve

CVE-2026-54128 HIGH POC
8.4 Jul 14

Local code execution in the Windows DHCP Client service stems from a use-after-free (CWE-416) memory-corruption flaw aff

CVE-2026-50518 CRITICAL
9.8 Jul 14

Remote code execution in the Microsoft Windows DHCP Server role allows an unauthenticated network attacker to run arbitr

CVE-2026-50655 HIGH POC
7.8 Jul 14

Local code execution in the Windows Media component of supported Windows 10, Windows 11, and Windows Server (2016 throug

CVE-2026-54992 HIGH POC
7.8 Jul 14

Local privilege escalation via heap-based buffer overflow in the Windows Message Queuing (MSMQ) Queue Manager component

CVE-2026-50489 HIGH POC
7.8 Jul 14

Local privilege escalation in Microsoft Windows Win32K lets an authenticated low-privileged user corrupt kernel heap mem

CVE-2026-50667 HIGH POC
7.0 Jul 14

Local privilege escalation in the Windows NTFS file system driver lets an authenticated low-privileged user win a race c

CVE-2026-57092 CRITICAL
9.9 Jul 14

Elevation of privilege in the Windows Hyper-V virtual network switch (VMSwitch) lets an authenticated attacker operating

CVE-2026-56190 CRITICAL
9.8 Jul 14

Remote code execution in Microsoft Windows Remote Desktop (RDP) allows an unauthorized network attacker to run arbitrary

CVE-2026-50447 CRITICAL
9.8 Jul 14

Remote code execution in Microsoft Windows Message Queuing (MSMQ) allows an unauthenticated attacker to run arbitrary co

Share

CVE-2026-33824 vulnerability details – vuln.today

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy