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CVE-2019-1966

25
FAUCET Score

CVE-2019-1966 is a privilege escalation vulnerability in Cisco UCS Fabric Interconnect Software, specifically within the local management CLI. An authenticated, local attacker can exploit extraneous subcommand options to execute arbitrary operating system commands as root. This vulnerability has a CVSS score of 7.8 (High), indicating a significant impact with high confidentiality, integrity, and availability compromise. While no public exploit code (Metasploit, Nuclei, ExploitDB) is available, the vulnerability has received some community discussion and media coverage, including an article from BleepingComputer. It is not currently listed on CISA's KEV catalog, suggesting no active exploitation is publicly known.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.2CPE matchmatch criteria
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:cisco:nx-os:4.0:*:*:*:*:*:*:*
3.2\(3b\)aCPE matchmatch criteria
cpe:2.3:a:cisco:unified_computing_system:3.2\(3b\)a:*:*:*:*:*:*:*
4.0\(1a\)aCPE matchmatch criteria
cpe:2.3:a:cisco:unified_computing_system:4.0\(1a\)a:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.36%
Probability of exploitation in next 30 days
EPSS Percentile
28.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0036 is in the 67th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 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-20190828-ucs-privescalation
Vendor Advisory