Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2020-12604

19
FAUCET Score

CVE-2020-12604 describes a denial-of-service vulnerability affecting Envoy versions 1.14.2, 1.13.2, and 1.12.4 or earlier. An unauthenticated attacker can exploit this by sending a large HTTP/2 payload without sufficient window updates or stream resets, leading to increased memory usage and potential service disruption. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity, primarily impacting availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.12.4CPE matchmatch criteria
cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
1.13.2CPE matchmatch criteria
cpe:2.3:a:envoyproxy:envoy:1.13.2:*:*:*:*:*:*:*
1.14.2CPE matchmatch criteria
cpe:2.3:a:envoyproxy:envoy:1.14.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.70%
Probability of exploitation in next 30 days
EPSS Percentile
74.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0170 is in the 57th percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: OpenShift Service Mesh 1.0Fixed in: servicemesh-proxy-0:1.0.11-1.el8
View patch
redhatpatch availablevia redhat_api
Product: OpenShift Service Mesh 1.1Fixed in: servicemesh-proxy-0:1.1.4-2.el8
View patch

Vendor Advisories (1)

redhatCVE-2020-12604Moderate

envoy: Resource exhaustion via HTTP/2 client requests with large payloads and improper stream windows

Jun 30, 2020

References

github.com / envoyproxy/envoy/commits/master
PatchThird Party Advisory
github.com / envoyproxy/envoy/security/advisories/GHSA-8hf8-8gvw-ggvx
Third Party Advisory