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CVE-2017-12339

16
FAUCET Score

CVE-2017-12339 is a command injection vulnerability in the CLI of Cisco NX-OS System Software, affecting numerous Nexus and Multilayer Director Switches. It stems from insufficient input validation, allowing an authenticated, local attacker to inject crafted arguments into CLI commands. This medium-severity vulnerability (CVSS 5.7) could enable arbitrary command execution at the user's privilege level, potentially impacting environments with multiple virtual device contexts. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
7.0\(0\)hsk\(0.357\)CPE matchmatch criteria
cpe:2.3:o:cisco:nx-os:7.0\(0\)hsk\(0.357\):*:*:*:*:*:*:*
8.0\(1\)CPE matchmatch criteria
cpe:2.3:o:cisco:nx-os:8.0\(1\):*:*:*:*:*:*:*
8.1\(0\)bd\(0.20\)CPE matchmatch criteria
cpe:2.3:o:cisco:nx-os:8.1\(0\)bd\(0.20\):*:*:*:*:*:*:*
12.2\(1.107\)CPE matchmatch criteria
cpe:2.3:o:cisco:lan_switch_software:12.2\(1.107\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.7MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
1.5
Impact Score
3.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.70%
Probability of exploitation in next 30 days
EPSS Percentile
49.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0070 is in the 95th percentile among its peer group of 3,720 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, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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-20171129-nxos7
Vendor Advisory
securityfocus.com / bid/102198
securitytracker.com / id/1039938
Third Party AdvisoryVDB Entry