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CVE-2017-12255

18
FAUCET Score

CVE-2017-12255 is a restricted shell break vulnerability in the CLI of Cisco UCS Central Software. It allows an authenticated, local attacker to gain shell access to the underlying system due to insufficient input validation. With a CVSS score of 6.7 (Medium), exploitation requires high privileges and local access, but can lead to high confidentiality, integrity, and availability impacts. There is no known public exploit code (Metasploit, Nuclei, ExploitDB), and it is not listed in CISA's KEV catalog. Community discussion and media coverage are minimal, suggesting low active exploitation or public awareness.

Impacted Technologies

VendorProductVersion(s)CPE
1.5\(1c\)CPE matchmatch criteria
cpe:2.3:a:cisco:unified_computing_system:1.5\(1c\):*:*:*:*:*:*:*

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
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
34.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 85th 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-20170920-ucs
Vendor Advisory
securityfocus.com / bid/100932
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039412
Third Party AdvisoryVDB Entry