CVE-2025-32793

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

0.1% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2025-04-21 16:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 09:12 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.1% in the next 30 days (EPSS).
• Severity: 4.0 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2025-04-21 16:15 UTC

Last modified

2026-06-17 09:12 UTC

Exploit probability

0.1% · EPSS, next 30 days

Weakness

CWE-319 · Cleartext transmission

Record status

Analyzed

Affected

• Cilium < 1.15.16
• Cilium < 1.16.9
• Cilium < 1.17.3

Attack profile CVSS 3.1 · 4.0

Attack vector

Network

Complexity

High

Privileges needed

None

User interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2025-32793.md and follow it. Check whether this project is affected by CVE-2025-32793. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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