CVE-2026-64676
NVD: Kata Containers is an open source implementation of lightweight Virtual Machines (VMs) that perform like containers. NVD: In versions prior to 4.0.0, the kata-agent is vulnerable to an authorization bypass in confidential-guest memory management. NVD: In Confidential Containers (CoCo) deployments, the kata-agent enforces an OPA/Rego-based AgentPolicy that must authorize every ttRPC API call, forming the security boundary that prevents an untrusted host from directing the confidential guest.
5.7 Severity
MEDIUM EPSS
0.0012 (2) KEV
-
Source-published summary
NVD: Kata Containers is an open source implementation of lightweight Virtual Machines (VMs) that perform like containers. NVD: In versions prior to 4.0.0, the kata-agent is vulnerable to an authorization bypass in confidential-guest memory management. NVD: In Confidential Containers (CoCo) deployments, the kata-agent enforces an OPA/Rego-based AgentPolicy that must authorize every ttRPC API call, forming the security boundary that prevents an untrusted host from directing the confidential guest.
Possible impact
This medium severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for defensive exposure review.
Affected context
Affected product or version requires source confirmation.
Remediation / advisory
Patch confirmed by source text; fixed version context: version.
Why it matters
This medium severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for defensive exposure review.; CVSS 5.7 (MEDIUM); EPSS percentile 2; not listed in KEV; Patch confirmed by source text; fixed version context: version; sources: NVD, OSV.
What to verify
Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.
Exposure hint
exposure unknown
Impact tags
Urgency reasons
Source-derived note
Summary derived from NVD / OSV description; unsafe procedural detail is not shown.
Redaction metadata
- source summary used
- True
- fallback summary used
- False
- unsafe procedural detail present
- false
- raw source displayed
- false
- public summary redacted
- true
Remediation handoff
Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.
Safety note
This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.