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CVE-2015-6392

20
FAUCET Score

CVE-2015-6392 is a denial-of-service vulnerability affecting Cisco NX-OS on various Nexus series devices (2000, 5000, 5500, 5600, 6000, 7000, 7700, and 9000). Remote attackers can crash affected devices by sending crafted IPv4 DHCP packets to the DHCPv4 or smart relay agents. This vulnerability has a CVSS v3 score of 7.5 (High), indicating a network-based attack with low complexity, requiring no user interaction, and resulting in high availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.1.\(2\)CPE matchmatch criteria
cpe:2.3:o:cisco:nx-os:4.1.\(2\):*:*:*:*:*:*:*
4.1.\(3\)CPE matchmatch criteria
cpe:2.3:o:cisco:nx-os:4.1.\(3\):*:*:*:*:*:*:*
4.1.\(4\)CPE matchmatch criteria
cpe:2.3:o:cisco:nx-os:4.1.\(4\):*:*:*:*:*:*:*
4.1.\(5\)CPE matchmatch criteria
cpe:2.3:o:cisco:nx-os:4.1.\(5\):*:*:*:*:*:*:*
4.2\(3\)CPE matchmatch criteria
cpe:2.3:o:cisco:nx-os:4.2\(3\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.83%
Probability of exploitation in next 30 days
EPSS Percentile
85.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0283 is in the 74th percentile among its peer group of 51,551 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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-20161005-dhcp1
Vendor Advisory
securityfocus.com / bid/93406
securitytracker.com / id/1036948