Is CVE-2013-6683 being actively exploited?

CVE-2013-6683 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2013-6683?

CVE-2013-6683 has a CVSS 2.0 base score of 6.1 (MEDIUM).

CVE-2013-6683

MEDIUM · CVSS 6.1EPSS 0.7%EU EUVD

The IPv6 implementation in Cisco NX-OS does not properly handle neighbor-table adjacencies, which allows remote attackers to cause a denial of service (NS processing outage) via a series of malformed packets, aka Bug ID CSCtd15904.

Key facts

CVSS score: 6.1 (v2.0)
Severity: MEDIUM
CVSS vector: AV:A/AC:L/Au:N/C:N/I:N/A:C
Weakness (CWE): CWE-20
EPSS score: 0.7% (55th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2013-6485)
Published: November 13, 2013
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-6485 in the EU Vulnerability Database. Last updated in EUVD on September 17, 2024.

View on the EU Vulnerability Database

Affected products

cisco / nx-os

References

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-6683(Vendor Advisory)

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

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