CVE-2013-6683
CVE-2013-6683 is a medium-severity vulnerability in Cisco Nx-os with a CVSS 2.0 base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.
Key facts
- Severity: Medium (CVSS 2.0 base score 6.1)
- EPSS exploit prediction: 1% (50th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-20
- Affected product: Cisco Nx-os
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2013-6683?
- 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.
- How severe is CVE-2013-6683?
- CVE-2013-6683 has a CVSS 2.0 base score of 6.1, rated medium severity.
- Is CVE-2013-6683 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2013-6683?
- CVE-2013-6683 affects Cisco Nx-os. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2013-6683?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2013-6683 published?
- CVE-2013-6683 was published on 2013-11-13 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:cisco:nx-os:-:*:*:*:*:*:*:*
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