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CVE-2023-32187

19
FAUCET Score

CVE-2023-32187 is an Allocation of Resources Without Limits or Throttling vulnerability affecting SUSE k3s versions prior to v1.24.17+k3s1, v1.25.13+k3s1, v1.26.8+k3s1, v1.27.5+k3s1, and v1.28.1+k3s1. This high-severity vulnerability (CVSS 7.5) allows unauthenticated attackers with network access to the k3s apiserver/supervisor port (TCP 6443) to cause a denial of service. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.24.0, < 1.24.17\+k3s1CPE matchmatch criteria
cpe:2.3:a:k3s:k3s:*:*:*:*:*:*:*:*
>= 1.25.0, < 1.25.13\+k3s1CPE matchmatch criteria
cpe:2.3:a:k3s:k3s:*:*:*:*:*:*:*:*
>= 1.26.0, < 1.26.8\+k3s1CPE matchmatch criteria
cpe:2.3:a:k3s:k3s:*:*:*:*:*:*:*:*
>= 1.27.0, < 1.27.5\+k3s1CPE matchmatch criteria
cpe:2.3:a:k3s:k3s:*:*:*:*:*:*:*:*
>= 1.28.0, < 1.28.1\+k3s1CPE matchmatch criteria
cpe:2.3:a:k3s:k3s:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.60%
Probability of exploitation in next 30 days
EPSS Percentile
45.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0060 is in the 22nd percentile among its peer group of 51,551 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

gopatch availablevia ghsa
Product: github.com/k3s-io/k3sFixed in: 1.24.17
gopatch availablevia ghsa
Product: github.com/k3s-io/k3sFixed in: 1.25.13
gopatch availablevia ghsa
Product: github.com/k3s-io/k3sFixed in: 1.26.8
gopatch availablevia ghsa
Product: github.com/k3s-io/k3sFixed in: 1.27.5
gopatch availablevia ghsa
Product: github.com/k3s-io/k3sFixed in: 1.28.1
github_advisoryworkaround availablevia nvd_reference
View patch

Vendor Advisories (1)

goGHSA-m4hf-6vgr-75r2high

K3s apiserver port is vulnerable to unauthenticated remote denial-of-service (DoS) attack via TLS SAN stuffing attack

Sep 11, 2023

References

bugzilla.suse.com / show_bug.cgi
Broken Link
github.com / k3s-io/k3s/security/advisories/GHSA-m4hf-6vgr-75r2
MitigationVendor Advisory