CVE-2020-12604

Name: CVE-2020-12604
Creator: NVD / NIST
Published: 2020-07-01T15:15:12.923+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.70%

Last modified Jun 17, 2026

CVE-2020-12604 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Envoy version 1.14.2, 1.13.2, 1.12.4 or earlier is susceptible to increased memory usage in the case where an HTTP/2 client requests a large payload but does not send enough window updates to consume the entire stream and does not reset the stream.. EPSS estimates a 1.70% chance of exploitation in the next 30 days.

Description

Envoy version 1.14.2, 1.13.2, 1.12.4 or earlier is susceptible to increased memory usage in the case where an HTTP/2 client requests a large payload but does not send enough window updates to consume the entire stream and does not reset the stream.

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

1.70%

74.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-401

Affected Software

Vendor	Product	Versions
Envoyproxy	Envoy	<= 1.12.4
Envoyproxy	Envoy	1.13.2
Envoyproxy	Envoy	1.14.2

References

https://github.com/envoyproxy/envoy/commits/masterPatch, Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-8hf8-8gvw-ggvxThird Party Advisory
https://github.com/envoyproxy/envoy/commits/masterPatch, Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-8hf8-8gvw-ggvxThird Party Advisory

Timeline

Published: Jul 1, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-12604?

How severe is CVE-2020-12604?

CVE-2020-12604 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.70% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12604?

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-2020-12604?

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

Scan your code now

Source: NVD / NIST