CVE-2021-3586

Name: CVE-2021-3586
Creator: NVD / NIST
Published: 2022-08-22T15:15:13.527+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.88%

Last modified Jun 17, 2026

CVE-2021-3586 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 0.88% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.88%

54.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Redhat	Openshift Service Mesh	2.0
Redhat	Servicemesh-Operator	2.0.5.1

References

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

Timeline

Published: Aug 22, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3586?

How severe is CVE-2021-3586?

CVE-2021-3586 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.88% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3586?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3586?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST