CVE-2021-22116

Name: CVE-2021-22116
Creator: NVD / NIST
Published: 2021-06-08T12:15:10.347+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.39%

Last modified Jun 17, 2026

CVE-2021-22116 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. RabbitMQ all versions prior to 3.8.16 are prone to a denial of service vulnerability due to improper input validation in AMQP 1.0 client connection endpoint. A malicious user can exploit the vulnerability by sending malicious AMQP messages to the target RabbitMQ instance having the AMQP 1.0 plugin enabled.. EPSS estimates a 1.39% chance of exploitation in the next 30 days.

Description

RabbitMQ all versions prior to 3.8.16 are prone to a denial of service vulnerability due to improper input validation in AMQP 1.0 client connection endpoint. A malicious user can exploit the vulnerability by sending malicious AMQP messages to the target RabbitMQ instance having the AMQP 1.0 plugin enabled.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.39%

68.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Vmware	Rabbitmq	< 3.8.16
Debian	Debian Linux	9.0

References

https://lists.debian.org/debian-lts-announce/2021/07/msg00011.htmlMailing List, Third Party Advisory
https://tanzu.vmware.com/security/cve-2021-22116Vendor Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00011.htmlMailing List, Third Party Advisory
https://tanzu.vmware.com/security/cve-2021-22116Vendor Advisory

Timeline

Published: Jun 8, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22116?

How severe is CVE-2021-22116?

CVE-2021-22116 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.39% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22116?

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-2021-22116?

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

Scan your code now

Source: NVD / NIST