CVE-2024-28249

Cilium has possible unencrypted traffic between nodes when using IPsec and L7 policies

MEDIUM
6.1
CVSS Score
Published: March 18, 2024 at 09:36 PM UTC
Updated: June 17, 2026 at 07:21 AM UTC
1 product affected across 1 vendorCilium

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.13.13, 1.14.8, and 1.15.2, in Cilium clusters with IPsec enabled and traffic matching Layer 7 policies, IPsec-eligible traffic between a node's Envoy proxy and pods on other nodes is sent unencrypted and IPsec-eligible traffic between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.15.2, 1.14.8, and 1.13.13. There is no known workaround for this issue.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.13.13v < 1.14.8v < 1.15.21.14.0 ≤ v < 1.14.81.15.0 ≤ v < 1.15.2
Affected range stops below 1.13.13, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.14.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.15.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMGitHub_M
Attack Vector
ADJACENT_NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-311CWE-319

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