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CVE-2020-5420

24
FAUCET Score

CVE-2020-5420 describes a denial-of-service vulnerability affecting Cloud Foundry Routing (Gorouter) versions prior to 0.206.0, as well as cf-deployment. A malicious developer with "cf push" access can exploit this by deploying an application that sends specially crafted HTTP responses, causing Gorouter instances to crash. This high-severity vulnerability (CVSS 7.7) has a low attack complexity and can lead to a complete denial-of-service for the Cloud Foundry cluster. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 13.15.0CPE matchmatch criteria
cpe:2.3:a:cloudfoundry:cf-deployment:*:*:*:*:*:*:*:*
< 0.206.0CPE matchmatch criteria
cpe:2.3:a:cloudfoundry:gorouter:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.7HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.1
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.18%
Probability of exploitation in next 30 days
EPSS Percentile
64.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0118 is in the 61st percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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

Remediation records are not available for this CVE.

References

cloudfoundry.org / blog/cve-2020-5420
Vendor Advisory