CVE-2022-21654

Name: CVE-2022-21654
Creator: NVD / NIST
Published: 2022-02-22T23:15:11.103+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.06%

Last modified Jun 17, 2026

CVE-2022-21654 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Envoy is an open source edge and service proxy, designed for cloud-native applications. Envoy's tls allows re-use when some cert validation settings have changed from their default configuration. EPSS estimates a 1.06% chance of exploitation in the next 30 days.

Description

Envoy is an open source edge and service proxy, designed for cloud-native applications. Envoy's tls allows re-use when some cert validation settings have changed from their default configuration. The only workaround for this issue is to ensure that default tls settings are used. Users are advised to upgrade.

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

1.06%

60.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
Envoyproxy	Envoy	>= 1.7.0, < 1.18.6
Envoyproxy	Envoy	>= 1.19.0, < 1.19.3
Envoyproxy	Envoy	>= 1.20.0, < 1.20.2
Envoyproxy	Envoy	>= 1.21.0, < 1.21.1

References

https://github.com/envoyproxy/envoy/commit/e9f936d85dc1edc34fabd0a1725ec180f2316353Patch, Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-5j4x-g36v-m283Issue Tracking, Third Party Advisory
https://github.com/envoyproxy/envoy/commit/e9f936d85dc1edc34fabd0a1725ec180f2316353Patch, Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-5j4x-g36v-m283Issue Tracking, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2022-21654?

How severe is CVE-2022-21654?

CVE-2022-21654 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.06% probability of exploitation in the next 30 days.

How do I fix CVE-2022-21654?

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-2022-21654?

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

Scan your code now

Source: NVD / NIST