# CVE-2026-69587: Microsoft Windows IKE Extension null pointer dereference

Source: https://junglewise.ai/threats/cve-2026-69587-microsoft-windows-ike-extension-null-pointer-dereference  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-08. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-69587 · Severity: high · CVSS 7.5 · Published 2026-09-08

Windows IKE Extension is a core Windows networking component used to establish secure VPN and remote access connections. A null pointer dereference vulnerability allows a remote attacker to crash the IKE Extension service, disrupting VPN connectivity and remote access for affected users and organizations.

Technologies: [Microsoft Windows IKE Extension](https://junglewise.ai/threats/technologies/windows-ike-extension). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-69587 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-69587 being exploited in the wild.

**How severe is CVE-2026-69587?** High severity, with a CVSS score of 7.5, published 8 September 2026.

**Which products and versions are affected?** Microsoft Windows IKE Extension.

**Is there a fix for CVE-2026-69587?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-69587 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-69587?** Check whether you run Microsoft Windows IKE Extension. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A null pointer dereference vulnerability exists in the Windows IKE (Internet Key Exchange) Extension, a component responsible for IPsec protocol negotiation and VPN establishment. An unauthenticated remote attacker can send specially crafted network packets over the network to trigger the null pointer dereference, causing the IKE service to crash and resulting in a denial of service. No authentication is required and the attack is purely network-based. The vulnerability does not allow code execution or privilege escalation, but disrupts VPN and remote access availability. A patch is available from Microsoft.

## Affected products

- Microsoft Windows IKE Extension

## Timeline

- 2026-09-08: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69587](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69587)

## Related threats

- [Microsoft Windows IKE Extension access control bypass allows spoofing](https://junglewise.ai/threats/cve-2026-122169-insufficient-granularity-of-access-control-in-windows-ike)
- [Microsoft Windows IKE Extension out-of-bounds read](https://junglewise.ai/threats/cve-2026-83521-out-of-bounds-read-in-windows-ike-extension-allows-an-authorized)
- [Microsoft Windows IKE Extension null pointer dereference](https://junglewise.ai/threats/cve-2026-69881-microsoft-windows-ike-extension-null-pointer-dereference)
- [Microsoft Windows IKE Extension heap buffer overflow](https://junglewise.ai/threats/cve-2026-69429-microsoft-windows-ike-extension-heap-buffer-overflow)