How severe is CVE-2025-32793?

CVE-2025-32793 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2025-32793 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-32793?

CVE-2025-32793 affects Cilium. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-32793?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-32793 have an EU (EUVD) identifier?

Yes. CVE-2025-32793 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12230.

When was CVE-2025-32793 published?

CVE-2025-32793 was published on 2025-04-21 and last updated on 2026-06-17.

CVE-2025-32793

CVE-2025-32793 is a medium-severity vulnerability in Cilium with a CVSS 3.x base score of 4.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-362.

Key facts

Severity: Medium (CVSS 3.x base score 4.0)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12230
Weakness: CWE-362
Affected product: Cilium
Published: 2025-04-21
Last modified: 2026-06-17

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.

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.
How severe is CVE-2025-32793?: CVE-2025-32793 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2025-32793 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-32793?: CVE-2025-32793 affects Cilium. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-32793?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-32793 have an EU (EUVD) identifier?: Yes. CVE-2025-32793 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12230.
When was CVE-2025-32793 published?: CVE-2025-32793 was published on 2025-04-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*

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