CVE-2026-63823: keys: Pin request_key_auth payload in instantiate paths

highCVSS 8.4CVE-2026-63823

CSIRTS triage

vendor: KVM product: KVMOther

What: The vulnerability pins the request_key_auth payload in instantiate paths.
Who is affected: Deployments of KVM that utilize key management functionalities.
Urgency: Remediation is necessary to ensure the integrity of key management operations.
Action: Update to the latest version of KVM.

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 8.4
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63823

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-2026-638230.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-63823	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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