Is CVE-2017-7509 being actively exploited?

CVE-2017-7509 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2017-7509?

CVE-2017-7509 has a CVSS 3.0 base score of 3.5 (LOW).

CVE-2017-7509

LOW · CVSS 3.5EPSS 0.7%EU EUVD

An input validation error was found in Red Hat Certificate System's handling of client provided certificates before 8.1.20-1. If the certreq field is not present in a certificate an assertion error is triggered causing a denial of service.

Key facts

CVSS score: 3.5 (v3.0)
Severity: LOW
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-20
EPSS score: 0.7% (53th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2017-16526)
Published: July 26, 2018
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2017-16526 in the EU Vulnerability Database. Last updated in EUVD on August 5, 2024.

View on the EU Vulnerability Database

Affected products

redhat / certificate system

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Red Hat Certificate System 8 - Red Hat, Inc. - Common Criteria CCEVS-VR-10359-2012 - archived

References

http://www.securitytracker.com/id/1039248(Third Party Advisory, VDB Entry)
https://access.redhat.com/errata/RHSA-2017:2560(Vendor Advisory)
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7509(Issue Tracking, Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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