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CVE-2018-0238

31
FAUCET Score

CVE-2018-0238 is a critical vulnerability in Cisco Unified Computing System (UCS) Director releases 6.0 and 6.5 (prior to patch 3) that allows an authenticated, remote attacker to bypass role-based access controls. By logging in with a modified username and valid password, an attacker can gain unauthorized visibility into and perform actions on all virtual machines in the UCS Director end-user portal. This vulnerability has a CVSS score of 9.9 (Critical) due to its network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
6.5\(0.0\)CPE matchmatch criteria
cpe:2.3:a:cisco:unified_computing_system_director:6.5\(0.0\):*:*:*:*:*:*:*
6.5\(0.1\)CPE matchmatch criteria
cpe:2.3:a:cisco:unified_computing_system_director:6.5\(0.1\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.9CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.1
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.18%
Probability of exploitation in next 30 days
EPSS Percentile
91.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0518 is in the 92nd percentile among its peer group of 1,124 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 1.0 Bluesky, 0.5 Mastodon, and 1.6 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-20180418-uscd
Vendor Advisory
securityfocus.com / bid/103919
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040708
Third Party AdvisoryVDB Entry