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CVE-2025-64715
Good to know:
Date: November 28, 2025
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.16.17, 1.17.10, and 1.18.4, CiliumNetworkPolicys which use egress.toGroups.aws.securityGroupsIds to reference AWS security group IDs that do not exist or are not attached to any network interface may unintentionally allow broader outbound access than intended by the policy authors. In such cases, the toCIDRset section of the derived policy is not generated, which means outbound traffic may be permitted to more destinations than originally intended. This issue has been patched in versions 1.16.17, 1.17.10, and 1.18.4. There are no workarounds for this issue.
Severity Score
Related Resources (8)
Severity Score
Weakness Type (CWE)
Improper Access Control
CWE-284Top Fix
Upgrade Version
Upgrade to version github.com/cilium/cilium - v1.18.4;github.com/cilium/cilium - v1.16.17;https://github.com/cilium/cilium.git - v1.16.17;https://github.com/cilium/cilium.git - v1.17.10;https://github.com/cilium/cilium.git - v1.18.4
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | LOCAL |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | LOW |
| Integrity (I): | NONE |
| Availability (A): | NONE |