No exploitation reported

CVE-2015-6392

No exploitation reported by the sources we read.

Published2016-10-06
WeaknessCWE-399

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Cisco NX-OS 4.1 through 7.3 and 11.0 through 11.2 on Nexus 2000, 5000, 5500, 5600, 6000, 7000, 7700, and 9000 devices allows remote attackers to cause a denial of service (device crash) via crafted IPv4 DHCP packets to the (1) DHCPv4 relay agent or (2) smart relay agent, aka Bug IDs CSCuq24603, CSCur93159, CSCus21693, and CSCut76171.

Timeline

dates in UTC

2016-10-0601:59CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2015-6392?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2015-6392?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Cisco nx-osversion to verify

Branch	Affected	Fixed in	Source
4.1	= 4.1.\(2\)	no fix published	NVD
4.1	= 4.1.\(3\)	no fix published	NVD
4.1	= 4.1.\(4\)	no fix published	NVD
4.1	= 4.1.\(5\)	no fix published	NVD
4.2	= 4.2\(3\)	no fix published	NVD
4.2	= 4.2\(4\)	no fix published	NVD
4.2	= 4.2\(6\)	no fix published	NVD
4.2	= 4.2\(8\)	no fix published	NVD
4.2	= 4.2.\(2a\)	no fix published	NVD
5.0	= 5.0\(2a\)	no fix published	NVD
5.0	= 5.0\(3\)	no fix published	NVD
5.0	= 5.0\(5\)	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

tools.cisco.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.07.5read 2026-10-23
NVDCVSS 2.07.8read 2026-10-23
NVDweakness (CWE)CWE-399read 2026-10-23
FIRST EPSSEPSS score2.8 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2016-10-06
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2015-6392?

Is CVE-2015-6392 actively exploited?

Active exploitation of CVE-2015-6392 has not been confirmed. Its EPSS score was 2.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2015-6392?

CVE-2015-6392 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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