CVE-2026-31431: Copy Fail vulnerability enables Linux root privilege escalation across cloud environments
2026-05-03T02:52:12Z•3b634a1ca3f8cc5670030b49eed73badbbf27e54aa4d93f88ab7aba5f4b8397d
CVE-2026-31431Copy_Failcloudexploit_in_the_wildkernelkuberneteslinuxmicrosoft_security_blogprivilege_escalationroot
What happened
CVE-2026-31431 ("Copy Fail") is a high-severity Linux vulnerability that enables local root privilege escalation across cloud environments and Kubernetes workloads. Microsoft reports a working exploit in the wild and urges rapid detection, mitigation, and patching to reduce risk to affected Linux hosts and containerized workloads.
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- microsoft_security_blog
- Record identifier
- 3b634a1ca3f8cc5670030b49eed73badbbf27e54aa4d93f88ab7aba5f4b8397d
- Enrichment time
- 2026-05-03T02:52:12Z
- AI-assisted enrichment
- Yes
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