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CVE-2026-65796: Windows iSCSI Target Service Remote Code Execution Vulnerability

highCVSS 8.1CVE-2026-65796
Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network.

CSIRTS triage

vendor: Microsoftproduct: Windows iSCSI Target ServiceDenial of service
What
A heap-based buffer overflow in Windows iSCSI Target Service enables network-based denial of service.
Who is affected
Systems running Windows iSCSI Target Service exposed to untrusted network connections.
Urgency
Medium priority; network DoS vector requires remediation but exploitation is currently unreported.
Action
Apply Windows updates addressing CVE-2026-65796 when available.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 8.1
Published
2026-08-11
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65796

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-65796coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Windows iSCSI Target

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from Microsoft Security Response Center