Quick answers
- Is CVE-2026-65794 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-65794 being exploited in the wild.
- How severe is CVE-2026-65794?
- Medium severity, with a CVSS score of 6.5, published 11 August 2026.
- Which products and versions are affected?
- Microsoft Windows SMB Client.
- Is there a fix for CVE-2026-65794?
- 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-2026-65794 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-65794?
- Check whether you run Microsoft Windows SMB Client. 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 buffer over-read vulnerability exists in the Windows SMB Client networking implementation. The flaw allows an attacker to read beyond allocated memory boundaries via a specially crafted SMB protocol message sent over the network. No authentication or user interaction is required; an attacker positioned on the same network segment or with network access to an SMB client can trigger the vulnerability to disclose sensitive information from process memory. The vulnerability is a classic information disclosure class defect with a CVSS score of 6.5 (medium severity). Microsoft has released security patches to address this issue.
Affected products
- Microsoft Windows SMB Client
Timeline
- 2026-08-11: disclosed