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CVE-2023-6476

21
FAUCET Score

CVE-2023-6476 is a high-severity flaw in CRI-O, affecting Red Hat Enterprise Linux and OpenShift Container Platform, where an experimental annotation allows containers to bypass Kubernetes scheduler resource limits. This can lead to a denial of service on the node by enabling pods to consume excessive memory or CPU. The vulnerability has a CVSS score of 7.5, indicating a network-exploitable attack with low complexity and high impact on availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
3.11CPE matchmatch criteria
cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:*
4.13CPE matchmatch criteria
cpe:2.3:a:redhat:openshift_container_platform:4.13:*:*:*:*:*:*:*
4.14CPE matchmatch criteria
cpe:2.3:a:redhat:openshift_container_platform:4.14:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.86%
Probability of exploitation in next 30 days
EPSS Percentile
54.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0086 is in the 30th percentile among its peer group of 51,551 CVEs.

Social Chatter

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 (10)

gopatch availablevia ghsa
Product: github.com/cri-o/cri-oFixed in: 1.29.1
gopatch availablevia ghsa
Product: github.com/cri-o/cri-oFixed in: 1.28.3
gopatch availablevia ghsa
Product: github.com/cri-o/cri-oFixed in: 1.27.3
microsoftpatch availablevia msrc
Product: cbl2 cri-o 1.22.3-10 on CBL Mariner 2.0Fixed in: 1.22.3-10
microsoftpatch availablevia msrc
Product: 19777-17086Fixed in: 1.22.3-10
microsoftpatch availablevia msrc
Product: 18018-16823Fixed in: 1.22.3-10
microsoftpatch availablevia msrc
Product: cbl2 cri-o 1.22.3-14 on CBL Mariner 2.0Fixed in: 1.22.3-10
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.13Fixed in: cri-o-0:1.26.4-6.1.rhaos4.13.git9eb9cf3.el9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.14Fixed in: cri-o-0:1.27.2-7.rhaos4.14.git1cc7a64.el8
View patch
redhatvendor investigatingvia nvd_reference
View patch

Vendor Advisories (3)

goGHSA-p4rx-7wvg-fwrcmedium

CRI-O's pods can break out of resource confinement on cgroupv2

Jan 10, 2024
redhatCVE-2023-6476Moderate

cri-o: Pods are able to break out of resource confinement on cgroupv2

Jan 9, 2024
microsoft2024-Jan/CVE-2023-6476Moderate

Cri-o: pods are able to break out of resource confinement on cgroupv2

Jan 9, 2024

References

access.redhat.com / errata/RHSA-2024:0195
Vendor Advisory
access.redhat.com / errata/RHSA-2024:0207
Vendor Advisory
access.redhat.com / security/cve/CVE-2023-6476
Vendor Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingVendor Advisory