Exploited vulnerabilities / CVE-2026-33824
Confirmed exploited · remote code execution · Microsoft Internet Key Exchange (IKE) Service ExtensionsCVE-2026-33824
Microsoft Internet Key Exchange (IKE) Service Extensions remote code execution, confirmed exploited in the wild.
Microsoft Internet Key Exchange (IKE) Service Extensions contains a double free vulnerability that could enable remote code execution.
| CISA's name for it | Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability |
|---|---|
| Vendor and product | Microsoft · Internet Key Exchange (IKE) Service Extensions |
| Type | remote code execution · CWE-415 |
| Exploited | Confirmed by CISA listed 18 August 2026 |
| Likelihood | one of the most likely to be exploited of every vulnerability tracked |
| Deadline | 21 August 2026 · already passed |
| Used in ransomware | Not reported |
| Advisories | msrc.microsoft.com ↗ · www.cisa.gov ↗ · www.cisa.gov ↗ · nvd.nist.gov ↗ |
Three steps, in this order
Patch to the fixed version the vendor names, today if the product faces the internet.
Until it is patched, take the affected service off the internet or put it behind a VPN or allow-list.
Look for signs it was already used: new accounts, web shells, unexpected processes and outbound connections since the date it was listed.
| CISA's 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. |
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Know before someone else finds it
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CVE-2026-33824 in short
Is CVE-2026-33824 being exploited?
Yes. CISA added CVE-2026-33824 to its Known Exploited Vulnerabilities catalogue on 18 August 2026, which it does only on evidence of exploitation in the wild.
What is the CISA deadline for CVE-2026-33824?
US federal agencies must remediate it by 21 August 2026. Everyone else should treat that date as the latest safe point to patch an internet-facing system.
How likely is CVE-2026-33824 to be exploited in the next 30 days?
FIRST's Exploit Prediction Scoring System gives it 77%, the 99th percentile of every CVE it scores.
How do I fix CVE-2026-33824?
Patch to the fixed version the vendor names, today if the product faces the internet. Until it is patched, take the affected service off the internet or put it behind a VPN or allow-list. Look for signs it was already used: new accounts, web shells, unexpected processes and outbound connections since the date it was listed.
Other Microsoft vulnerabilities being exploited
| CVE | Product | Type | Listed |
|---|---|---|---|
| CVE-2026-124194 | Office | exploited vulnerability | 10 November 2026 |
| CVE-2026-96951 | Windows | command injection | 13 October 2026 |
| CVE-2026-65660 | SharePoint | exploited vulnerability | 25 September 2026 |
| CVE-2026-81963 | Windows | privilege escalation | 8 September 2026 |
| CVE-2026-85880 | Windows | privilege escalation | 8 September 2026 |
| CVE-2019-1068 | SQL Server | remote code execution | 26 August 2026 |
Sources: CISA Known Exploited Vulnerabilities catalogue (released 10 November 2026) and FIRST EPSS. Page compiled automatically by SAK T.L.M, the threat-intelligence tool of SAK T.E.C, on 13 November 2026.