CVE-2026-53198

highCVSS 7.8covered by 1 sourcefirst seen 2026-06-09

CSIRTS triage

What: This vulnerability involves a use-after-free issue related to a deferred file lock on double SMB2_CANCEL.
Who is affected: Deployments using ksmbd are at risk.
Urgency: Remediation is high priority due to a severity rating of 7.8.
Action: Apply the fix for CVE-2026-53198.

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

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Low exploitation risk0.47% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 37% of all EPSS-scored CVEs.

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