CVE-2023-33190: Sealos is an open source cloud operating system distribution based on the Kubernetes kernel

Q: How do I fix CVE-2023-33190?

sealos: upgrade to 4.2.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-33190 being exploited?

CVE-2023-33190 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-33190 affect?

CVE-2023-33190 affects sealos. Severity is critical (CVSS 9.9). Sealos is an open source cloud operating system distribution based on the Kubernetes kernel. In versions of Sealos prior to 4.2.1-rc4 an improper configuration of role based access control (RBAC) permissions resulted in an attacker being ab

Q: How urgent is CVE-2023-33190?

Priority 53/100. Critical severity; On your watchlist

This month

CRITICAL 9.9WATCHLISTUPGRADE

CVE-2023-33190 is a critical-severity flaw (CVSS 9.9) affecting sealos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Sealos is an open source cloud operating system distribution based on the Kubernetes kernel. In versions of Sealos prior to 4.2.1-rc4 an improper configuration of role based access control (RBAC) permissions resulted in an attacker being able to obtain cluster control permissions, which could control the entire cluster deployed with Sealos, as well as hundreds of pods and other resources within the cluster. This issue has been addressed in versio

Why this priority

Critical severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.9 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-287, CWE-863
Published	2023-06-29
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: sealos project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-06-29 19:15 UTCPublished CVE record published
2026-06-17 06:01 UTCUpdated Record last modified

sealos project sealos UPGRADE

Affected: < 4.2.1 · 4.2.1 rc1 · 4.2.1 rc2 · 4.2.1 rc3

Fixed in: 4.2.1

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-33190?

sealos: upgrade to 4.2.1. Exact commands for each OS are on this page.

Is CVE-2023-33190 being exploited?

CVE-2023-33190 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-33190 affect?

CVE-2023-33190 affects sealos. Severity is critical (CVSS 9.9). Sealos is an open source cloud operating system distribution based on the Kubernetes kernel. In versions of Sealos prior to 4.2.1-rc4 an improper configuration of role based access control (RBAC) permissions resulted in an attacker being ab

How urgent is CVE-2023-33190?

Priority 53/100. Critical severity; On your watchlist

Software pages

Kubernetes vulnerabilities

Related CVEs

CVE-2023-36815 HIGH 7.3 UPGRADE Sealos is a Cloud Operating System designed for managing cloud-native applications

References

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