CVE-2026-48914: Qemu-kvm: heap buffer overflow in virtio-blk scsi request handling

mediumCVSS 6.7CVE-2026-48914

CSIRTS triage

vendor: Qemu product: Qemu-kvm Memory corruption

What: A heap buffer overflow occurs in virtio-blk SCSI request handling.
Who is affected: Deployments using Qemu-kvm for virtualization.
Urgency: Remediation is medium urgency due to a medium severity rating of 6.7.
Action: Patch Qemu-kvm to the latest version.

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: medium — CVSS 6.7
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48914

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.

Low exploitation riskCVE-2026-489140.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-48914	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

medium[UPDATE] [medium] QEMU: Vulnerability allows denial of servicecert-bund

Recent advisories for Qemu-kvm

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.

highCVE-2026-3195: Qemu-kvm: virtio-snd: heap buffer overflow in virtio_snd_pcm_in_cb (incomplete fix for cve-2024…msrc · 2026-06-09
mediumCVE-2026-3196: Qemu-kvm: virtio-snd: integer overflow leading to unbounded memory allocationmsrc · 2026-06-09