Exploited vulnerability CISA KEV
CVE-2026-33824: Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability
CVE-2026-33824 is a vulnerability in Microsoft Internet Key Exchange (IKE) Service Extensions that CISA added to its Known Exploited Vulnerabilities catalog on August 18, 2026, meaning there is evidence it is being exploited. US federal civilian agencies must complete the required action by August 21, 2026.
CVE-2026-33824 is a vulnerability in Microsoft Internet Key Exchange (IKE) Service Extensions that CISA added to its Known Exploited Vulnerabilities catalog on August 18, 2026, meaning there is evidence it is being exploited. US federal civilian agencies must complete the required action by August 21, 2026.
- CVE ID
- CVE-2026-33824
- Vendor / project
- Microsoft
- Product
- Internet Key Exchange (IKE) Service Extensions
- Added to KEV
- Due date
- Days to remediate
- 3
- Known ransomware use
- Unknown
- Weakness
- CWE-415
CISA description #
Microsoft Internet Key Exchange (IKE) Service Extensions contains a double free vulnerability that could enable remote code execution.
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 and references #
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
This page reproduces CISA’s catalog entry and is not indexed by search engines until an editor adds analysis. [Editorial analysis pending]