Missing Authorization in Kata Containers - CVE-2026-64676
Published: July 26, 2026
Vulnerability identifier: #VU139373
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-64676
CWE-ID: CWE-862
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to tamper with in-guest memory management and cause availability and performance degradation of the confidential workload.
The vulnerability exists due to missing authorization in mem-agent ttRPC methods when handling ttRPC API calls. A remote attacker can invoke the affected methods unconditionally to tamper with in-guest memory management and cause availability and performance degradation of the confidential workload.
Only deployments with the mem-agent feature enabled are vulnerable.
Affected software
Kata Containers
How to mitigate CVE-2026-64676
Install security update from vendor's website.
Kata Containers - update to 4.0.0