CVE-2022-23606

Name: CVE-2022-23606
Creator: NVD / NIST
Published: 2022-02-22T23:15:11.337+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.00%

Last modified Jun 17, 2026

CVE-2022-23606 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Envoy is an open source edge and service proxy, designed for cloud-native applications. When a cluster is deleted via Cluster Discovery Service (CDS) all idle connections established to endpoints in that cluster are disconnected. EPSS estimates a 1.00% chance of exploitation in the next 30 days.

Description

Envoy is an open source edge and service proxy, designed for cloud-native applications. When a cluster is deleted via Cluster Discovery Service (CDS) all idle connections established to endpoints in that cluster are disconnected. A recursion was introduced in the procedure of disconnecting idle connections that can lead to stack exhaustion and abnormal process termination when a cluster has a large number of idle connections. This infinite recursion causes Envoy to crash. Users are advised to upgrade.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.00%

58.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-674

Affected Software

Vendor	Product	Versions
Envoyproxy	Envoy	>= 1.20.0, < 1.20.2
Envoyproxy	Envoy	1.21.0

References

https://github.com/envoyproxy/envoy/commit/4b6dd3b53cd5c6d4d4df378a2fc62c1707522b31Patch, Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-9vp2-4cp7-vvxfIssue Tracking, Third Party Advisory
https://github.com/envoyproxy/envoy/commit/4b6dd3b53cd5c6d4d4df378a2fc62c1707522b31Patch, Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-9vp2-4cp7-vvxfIssue Tracking, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2022-23606?

How severe is CVE-2022-23606?

CVE-2022-23606 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.00% probability of exploitation in the next 30 days.

How do I fix CVE-2022-23606?

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-2022-23606?

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

Scan your code now

Source: NVD / NIST