CVE-2025-32793 MEDIUM

CVE-2025-32793: Cilium packets from terminating endpoints may not be encrypted in Wireguard-enabled clusters

Vendor Cilium
Product cilium
Weakness CWE-319 · Cleartext transmission
Published April 21, 2025
Last update April 21, 2025

CVSS base score

4.0/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality Low
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N

What the vulnerability does

01Description

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Versions 1.15.0 to 1.15.15, 1.16.0 to 1.16.8, and 1.17.0 to 1.17.2, are vulnerable when using Wireguard transparent encryption in a Cilium cluster, packets that originate from a terminating endpoint can leave the source node without encryption due to a race condition in how traffic is processed by Cilium. This issue has been patched in versions 1.15.16, 1.16.9, and 1.17.3. There are no workarounds available for this issue.

Key dates

02Disclosure timeline

April 21, 2025 CVE published
April 21, 2025 Record updated