CVE-2020-16164

Name: CVE-2020-16164
Creator: NVD / NIST
Published: 2020-07-30T16:15:11.943+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.4/10EPSS 0.91%

Last modified Jun 17, 2026

CVE-2020-16164 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. An issue was discovered in RIPE NCC RPKI Validator 3.x through 3.1-2020.07.06.14.28. It allows remote attackers to bypass intended access restrictions or to cause a denial of service on dependent routing systems by strategically withholding RPKI Route Origin Authorisation ".roa" files or X509 Certificate Revocation List files from the RPKI relying party's view. EPSS estimates a 0.91% chance of exploitation in the next 30 days.

Description

An issue was discovered in RIPE NCC RPKI Validator 3.x through 3.1-2020.07.06.14.28. It allows remote attackers to bypass intended access restrictions or to cause a denial of service on dependent routing systems by strategically withholding RPKI Route Origin Authorisation ".roa" files or X509 Certificate Revocation List files from the RPKI relying party's view. NOTE: some third parties may regard this as a preferred behavior, not a vulnerability

Metrics

CVSS 3.1

7.4/10

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

EPSS Probability

0.91%

55.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
Ripe	Rpki Validator 3	>= 3.0, <= 3.1-2020.07.06.14.28

References

https://github.com/RIPE-NCC/rpki-validator-3/issues/158Issue Tracking, Third Party Advisory
https://github.com/RIPE-NCC/rpki-validator-3/issues/232Issue Tracking, Third Party Advisory
https://github.com/RIPE-NCC/rpki-validator-3/security/advisories/GHSA-q76j-58cx-wp5vThird Party Advisory
https://github.com/RIPE-NCC/rpki-validator-3/issues/158Issue Tracking, Third Party Advisory
https://github.com/RIPE-NCC/rpki-validator-3/issues/232Issue Tracking, Third Party Advisory
https://github.com/RIPE-NCC/rpki-validator-3/security/advisories/GHSA-q76j-58cx-wp5vThird Party Advisory

Timeline

Published: Jul 30, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-16164?

How severe is CVE-2020-16164?

CVE-2020-16164 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 0.91% probability of exploitation in the next 30 days.

How do I fix CVE-2020-16164?

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-2020-16164?

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

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Source: NVD / NIST