Act
active
Public PoC Released for Unpatched Ubuntu Container Escape (CVE-2026-80521)
- Engineer — Act: Public PoC exists for a container-to-host-root escape on Ubuntu 22.04/24.04/26.04 LTS — all still unpatched. Apply the upstream kernel fix manually or enforce strict seccomp/AppArmor profiles on all container workloads immediately, and track Ubuntu’s security backport channel for the official LTS patch.
- SOC/IR — Plan: No evidence of active exploitation yet (EPSS 0.00, not on KEV), but a public PoC makes this a near-term detection priority; build or tune rules for anomalous privilege escalation originating from container processes and AF_UNIX socket abuse before exploitation begins.
- Leader — Skip
- Signals: CVE-2026-80521 — CISA KEV: not listed, EPSS 0.00, public PoC on GitHub
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