What is CVE-2023-32186?

CVE-2023-32186 is a high-severity vulnerability in SUSE Rancher Rke2, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2023-09-19.

How severe is CVE-2023-32186?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in SUSE Rancher Rke2

CVE-2023-32186

A Allocation of Resources Without Limits or Throttling vulnerability in SUSE RKE2 allows attackers with access to K3s servers apiserver/supervisor port (TCP 6443) cause denial of service. This issue affects RKE2: from 1.24.0 before 1.24.17+rke2r1, from v1.25.0 before v1.25.13+rke2r1, from v1.26.0 before v1.26.8+rke2r1, from v1.27.0 before v1.27.5+rke2r1, from v1.28.0 before v1.28.1+rke2r1.

Published 2023-09-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (51.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.001

Affected products

SUSE Rancher Rke2 — versions 1.28.1+rke2r1, 1.28.1\+rke2r1
SUSE Rke2 — versions 1.24.0, v1.25.0, v1.26.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

github.com/rancher/rke2/security/advisories/GHSA-p45j-vfv5-wprq (Mitigation, Vendor Advisory)
bugzilla.suse.com/show_bug.cgi (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2023-32186?: CVE-2023-32186 is a high-severity vulnerability in SUSE Rancher Rke2, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2023-09-19.
How severe is CVE-2023-32186?: High severity. CVSS v3 base score is 7.5 out of 10.