CVE-2026-31431: Copy Fail vulnerability enables Linux root privilege escalation across cloud environments
2026-05-03T20:52:12Z•a26904fd3513f200718673525baf0098578a7fa66dd519aaaa5092dcfbe7dbfe
CVE-2026-31431Copy FailKubernetesLinuxclouddetectionexploit in the wildmitigationprivilege escalationrootvulnerability
What happened
Microsoft warns of “Copy Fail” (CVE-2026-31431), a high-severity Linux vulnerability that enables local root privilege escalation across cloud environments and Kubernetes workloads. A working exploit is already observed in the wild; organizations should prioritize detection, apply vendor patches or mitigations, and harden container and cloud host configurations to reduce exposure.
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- microsoft_security_blog
- Record identifier
- a26904fd3513f200718673525baf0098578a7fa66dd519aaaa5092dcfbe7dbfe
- Enrichment time
- 2026-05-03T20:52:12Z
- AI-assisted enrichment
- Yes
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