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CVE-2017-6613

17
FAUCET Score

CVE-2017-6613 is a denial-of-service vulnerability in Cisco Prime Network Registrar, affecting all versions prior to 8.3.5. This flaw stems from incomplete DNS packet header validation, allowing an unauthenticated, remote attacker to send a malformed DNS packet and cause the DNS process to restart. Rated Medium (CVSS 5.8), the attack is low complexity, requires no user interaction, and results in a partial denial of service. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
8.3.0CPE matchmatch criteria
cpe:2.3:a:cisco:prime_network_registrar:8.3.0:*:*:*:*:*:*:*
8.3.1CPE matchmatch criteria
cpe:2.3:a:cisco:prime_network_registrar:8.3.1:*:*:*:*:*:*:*
8.3.2CPE matchmatch criteria
cpe:2.3:a:cisco:prime_network_registrar:8.3.2:*:*:*:*:*:*:*
8.3.3CPE matchmatch criteria
cpe:2.3:a:cisco:prime_network_registrar:8.3.3:*:*:*:*:*:*:*
8.3.4CPE matchmatch criteria
cpe:2.3:a:cisco:prime_network_registrar:8.3.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.8MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.99%
Probability of exploitation in next 30 days
EPSS Percentile
78.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0199 is in the 67th percentile among its peer group of 23,723 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, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20170419-prime-dns
Vendor Advisory
securityfocus.com / bid/97924
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038331