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CVE-2026-33824

critical · 9.8Actively exploited

On the CISA Known Exploited Vulnerabilities catalog

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.

Added 2026-08-18Remediation due 2026-08-21

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

9.8
CVSS
72.7%
EPSS (exploit prob.)
99th
EPSS percentile
2026-04-14
Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-415

Affected products

VendorProductAffected versions
microsoftwindows_10_1607< 10.0.14393.9060
microsoftwindows_10_1607< 10.0.14393.9060
microsoftwindows_10_1809< 10.0.17763.8644
microsoftwindows_10_1809< 10.0.17763.8644
microsoftwindows_10_21h2< 10.0.19044.7184
microsoftwindows_10_21h2< 10.0.19044.7184
microsoftwindows_10_21h2< 10.0.19044.7184
microsoftwindows_10_22h2< 10.0.19045.7184
microsoftwindows_10_22h2< 10.0.19045.7184
microsoftwindows_10_22h2< 10.0.19045.7184
microsoftwindows_11_23h2< 10.0.22631.6936
microsoftwindows_11_23h2< 10.0.22631.6936
microsoftwindows_11_24h2< 10.0.26100.8246
microsoftwindows_11_24h2< 10.0.26100.8246
microsoftwindows_11_25h2< 10.0.26200.8246
microsoftwindows_11_25h2< 10.0.26200.8246
microsoftwindows_11_26h1< 10.0.28000.1836
microsoftwindows_11_26h1< 10.0.28000.1836
microsoftwindows_server_2016< 10.0.14393.9060
microsoftwindows_server_2019< 10.0.17763.8644
microsoftwindows_server_2022< 10.0.20348.5020
microsoftwindows_server_2022_23h2< 10.0.25398.2274
microsoftwindows_server_2025< 10.0.26100.32690

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-33824