CVE-2025-32793: cilium — Fix

Description

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.

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CVSS v3.1 Score

4.0

MEDIUM

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

Weakness Type (CWE)

CWE-319 CWE-319

CWE-362 CWE-362

Affected Products

Vendor	Product	Versions
cilium	cilium	1.13.0 — 1.15.16
cilium	cilium	1.16.0 — 1.16.9
cilium	cilium	1.17.0 — 1.17.3

References

Advisories & Patches

https://github.com/cilium/cilium/pull/38592 https://github.com/cilium/cilium/security/advisories/GHSA-5vxx-c285-pcq4

Frequently Asked Questions

What is CVE-2025-32793? +

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. It has a CVSS v3.1 base score of 4.0 (MEDIUM).

How severe is CVE-2025-32793? +

CVE-2025-32793 has a CVSS v3.1 score of 4.0 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-32793? +

CVE-2025-32793 affects products from cilium, specifically: cilium. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-32793? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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