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cve recordhighexploited in the wild3 of 3 cataloguesexploit reported

CVE-2026-33824

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

· Added to CISA KEV
CVSS—
Severityhigh
Weakness—
EPSS1.6%75.7th percentile
Exploited3 KEV sources
Ransomware useUnknown
Federal fix dueAug 21, 2026
patch window

Called exploited 107 days after disclosure.

Measured from the CVE publication date to the earliest of 3 KEV catalogues that list it.

The life of this vulnerability

  1. CVE published
  2. First KEV listing4mo
  3. Last KEV listing19d
  4. Last sighting16d

Gaps are compressed to equal steps. The elapsed time is printed under each.

Which catalogues call it exploited

Sources3 of 3
Listings differ by19 d
Strongest claimconfirmed

3 catalogues list it. CIRCL aggregates the others and is shown but not counted.

Public exploitation evidence

7 public reports collected from VulnCheck and CIRCL, first on Jul 30, 2026. Each links to its original source. We have not verified them.

Description

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

Required action (CISA)

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.

References

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Our coverage of CVE-2026-33824

CVE-2026-33824

U.S. CISA adds Apple macOS, Microsoft SharePoint, Broadcom VMware vCenter, and Microsoft IKE flaws to its Known Exploited Vulnerabilities catalog

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added four new vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, mandating that federal agencies patch them by August 21, 2026. The newly cataloged flaws affect Apple macOS, Microsoft SharePoint, Broadcom VMware vCenter, and Microsoft Internet Key Exchange (IKE) Service Extensions.

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CVE-2008-4128high

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CVE-2026-33017high

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