# CVE-2026-69397: OpenSSH for Windows use-after-free vulnerability

Source: https://junglewise.ai/threats/cve-2026-69397-openssh-for-windows-use-after-free-vulnerability  
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-2026-69397 · Severity: high · CVSS 7.5 · Published 2026-09-08

OpenSSH for Windows is a remote access tool used by IT administrators to securely manage systems over networks. A use-after-free vulnerability allows an attacker to execute arbitrary code on affected systems without authentication, potentially leading to complete system compromise and unauthorized access to sensitive data.

Technologies: [Microsoft OpenSSH for Windows](https://junglewise.ai/threats/technologies/openssh-for-windows). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-69397 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-69397 being exploited in the wild.

**How severe is CVE-2026-69397?** High severity, with a CVSS score of 7.5, published 8 September 2026.

**Which products and versions are affected?** Microsoft OpenSSH for Windows <UNKNOWN>.

**Is there a fix for CVE-2026-69397?** 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-2026-69397 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-69397?** Check whether you run Microsoft OpenSSH for Windows at an affected version. 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

This vulnerability is a use-after-free condition in OpenSSH for Windows that allows an unauthenticated remote attacker to achieve arbitrary code execution. The vulnerability is reachable over the network without requiring prior authentication or user interaction. An attacker can exploit this flaw to gain elevated privileges and execute code with system-level access. The specific root cause and affected component details are not publicly disclosed in the available reference material, but the attack vector is confirmed as network-based and does not require authentication.

## Affected products

- Microsoft OpenSSH for Windows <UNKNOWN>

## Timeline

- 2026-09-08: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69397](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69397)

## Related threats

- [OpenSSH for Windows double free privilege elevation](https://junglewise.ai/threats/cve-2026-97811-double-free-in-openssh-for-windows-allows-an-authorized-attacker)
- [OpenSSH for Windows path traversal code execution](https://junglewise.ai/threats/cve-2026-83923-relative-path-traversal-in-openssh-for-windows-allows-an)
- [OpenSSH for Windows use-after-free privilege escalation](https://junglewise.ai/threats/cve-2026-83769-use-after-free-in-openssh-for-windows-allows-an-authorized)
- [OpenSSH for Windows resource exhaustion denial of service](https://junglewise.ai/threats/cve-2026-70163-allocation-of-resources-without-limits-or-throttling-in-openssh)