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Vulnerability record · CVE-2021-3586 · published 22 August 2022

CVE-2021-3586: Redhat openshift service mesh insecure default initialization vulnerability

Redhat · Openshift Service Mesh

A flaw was found in servicemesh-operator. The NetworkPolicy resources installed for Maistra do not properly specify which ports may be accessed, allowing access to all ports on these resources from any pod. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

9.8 CVSS 3.1 Critical EPSS 1.0% · top 38.4% CWE-1188 · Insecure default initialization
9.8CVSS 3.1 base score
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

A flaw was found in servicemesh-operator. The NetworkPolicy resources installed for Maistra do not properly specify which ports may be accessed, allowing access to all ports on these resources from any pod. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/security/cve/CVE-2021-3586 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1967738 Issue TrackingVendor Advisory
https://access.redhat.com/security/cve/CVE-2021-3586 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1967738 Issue TrackingVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-3586), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.