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CVE-2017-12331

22
FAUCET Score

CVE-2017-12331 is a medium-severity vulnerability in Cisco NX-OS System Software affecting Multilayer Director Switches, Nexus 7000/7700 Series Switches, and Unified Computing System Manager. An authenticated, local attacker with administrator credentials can bypass signature verification to load a crafted, unsigned software patch. This could lead to high impact on confidentiality, integrity, and availability. There is no known public exploit code, active exploitation, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
8.1\(1\)CPE matchmatch criteria
cpe:2.3:o:cisco:nx-os:8.1\(1\):*:*:*:*:*:*:*
7.0\(0\)hsk\(0.357\)CPE matchmatch criteria
cpe:2.3:a:cisco:unified_computing_system:7.0\(0\)hsk\(0.357\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.7MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.23%
Probability of exploitation in next 30 days
EPSS Percentile
14.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0023 is in the 59th percentile among its peer group of 3,720 CVEs.

Social Chatter

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-nxos
Vendor Advisory
securityfocus.com / bid/102159
securitytracker.com / id/1039930
Third Party AdvisoryVDB Entry