A vulnerability in the DNS input packet processor for Cisco Prime Network Registrar could allow an unauthenticated, remote attacker to cause the DNS process to momentarily restart, which could lead to a partial denial of service (DoS) condition on the affected system. The vulnerability is due to incomplete DNS packet header validation when the packet is received by the application. An attacker could exploit this vulnerability by sending a malformed DNS packet to the application. An exploit could allow the attacker to cause the DNS process to restart, which could lead to a DoS condition. This vulnerability affects Cisco Prime Network Registrar on all software versions prior to 8.3.5. Cisco Bug IDs: CSCvb55412.
CVE-2017-6613
MEDIUMNVD 5.85.8—
EchelonGraph scoreMEDIUM confidence
Score 5.8 from GitHub Security Advisory published 2022-05-13. NVD baseline CVSS 5.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.8
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 2%CVSS: 5.8Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.8
- EG Score
- 5.8(medium)
- EPSS
- 78.2%
- KEV
- Not listed
Published
April 20, 2017
Last Modified
May 13, 2026
References (6)
- psirt@ciscohttp://www.securityfocus.com/bid/97924
- psirt@ciscohttp://www.securitytracker.com/id/1038331
- psirt@ciscohttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170419-prime-dns
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/97924
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1038331
- af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170419-prime-dns
Data Freshness Timeline
(refreshed 11× in last 7d / 38× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-07 13:42 UTCEPSS rescore
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- 2026-05-22 14:06 UTCGHSA enrichment
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Frequently asked(5)
What is CVE-2017-6613?
CVE-2017-6613 is a medium vulnerability published on April 20, 2017. A vulnerability in the DNS input packet processor for Cisco Prime Network Registrar could allow an unauthenticated, remote attacker to cause the DNS process to momentarily restart, which could lead to a partial denial of service (DoS) condition on the affected system. The vulnerability is due to…
When was CVE-2017-6613 disclosed?
CVE-2017-6613 was first published in the National Vulnerability Database on April 20, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-6613 actively exploited?
CVE-2017-6613 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 78.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-6613?
CVE-2017-6613 has a CVSS v3 base score of 5.8 (NVD).
How do I remediate CVE-2017-6613?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-6613, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
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