CVE-2026-68898: Microsoft Windows iSCSI out-of-bounds read

CVE-2026-68898 · Severity: medium · CVSS 6.5 · Published 2026-09-08

Windows iSCSI is a network protocol used for storage connectivity. An attacker can exploit an out-of-bounds read vulnerability in the iSCSI implementation to cause the system to crash or become unresponsive, disrupting network storage access and potentially causing service outages.

Technologies: Microsoft Windows iSCSI. Vendors: Microsoft.

Quick answers

Is CVE-2026-68898 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-68898 being exploited in the wild.
How severe is CVE-2026-68898?
Medium severity, with a CVSS score of 6.5, published 8 September 2026.
Which products and versions are affected?
Microsoft Windows iSCSI <UNKNOWN>.
Is there a fix for CVE-2026-68898?
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-2026-68898 attacked?
It is attacked over the network.
Am I affected by CVE-2026-68898?
Check whether you run Microsoft Windows iSCSI 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

An out-of-bounds read vulnerability exists in the Windows iSCSI subsystem that allows an unauthenticated attacker to send a specially crafted network packet triggering a memory access violation. The vulnerability can be exploited over the network without prior authentication. A successful exploit results in denial of service through system crash or hang, disrupting iSCSI storage connectivity and availability. A patch has been published by Microsoft to address this issue.

Affected products

  • Microsoft Windows iSCSI <UNKNOWN>

Timeline

  • 2026-09-08: disclosed

References

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