Quick answers
- Is CVE-2026-65679 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-65679 being exploited in the wild.
- How severe is CVE-2026-65679?
- High severity, with a CVSS score of 8.1, published 11 August 2026.
- Which products and versions are affected?
- Microsoft Windows iSCSI Target Service.
- Is there a fix for CVE-2026-65679?
- 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-2026-65679 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-65679?
- Check whether you run Microsoft Windows iSCSI Target Service. 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 heap-based buffer overflow exists in the Windows iSCSI Target Service that processes iSCSI protocol messages. The vulnerability allows an unauthenticated attacker on the network to send a specially crafted iSCSI packet that triggers the overflow, overwriting adjacent heap memory and achieving arbitrary code execution. Attack requires network access to the iSCSI service port but no authentication or user interaction. Successful exploitation grants the attacker system-level code execution on the affected server. A security patch from Microsoft is expected to address this issue.
Affected products
- Microsoft Windows iSCSI Target Service
Timeline
- 2026-08-11: disclosed