CVE-2015-6393
No exploitation reported by the sources we read.
- Published2016-10-06
- WeaknessCWE-399
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « 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, 3000, 3500, 5000, 5500, 5600, 6000, 7000, 7700, and 9000 devices allows remote attackers to cause a denial of service (device crash) via malformed IPv4 DHCP packets to the DHCPv4 relay agent, aka Bug IDs CSCuq39250, CSCus21733, CSCus21739, CSCut76171, and CSCux67182.
Timeline
dates in UTC- 2016-10-0610:59CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2015-6393?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2015-6393?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 4.2 | = 4.2\(1\)n1\(1\) | no fix published | NVD |
| 4.2 | = 4.2\(1\)n2\(1\) | no fix published | NVD |
| 4.2 | = 4.2\(1\)n2\(1a\) | no fix published | NVD |
| 5.0 | = 5.0\(2\)n1\(1\) | no fix published | NVD |
| 5.0 | = 5.0\(2\)n2\(1\) | no fix published | NVD |
| 5.0 | = 5.0\(2\)n2\(1a\) | no fix published | NVD |
| 5.0 | = 5.0\(3\)n1\(1c\) | no fix published | NVD |
| 5.0 | = 5.0\(3\)n2\(1\) | no fix published | NVD |
| 5.0 | = 5.0\(3\)n2\(2\) | no fix published | NVD |
| 5.0 | = 5.0\(3\)n2\(2a\) | no fix published | NVD |
| 5.0 | = 5.0\(3\)n2\(2b\) | no fix published | NVD |
| 5.1 | = 5.1\(3\)n1\(1\) | 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 ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
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-2015-6393?
Is CVE-2015-6393 actively exploited?
What is the CVSS score for CVE-2015-6393?
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Related vulnerabilities
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