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CVE-2020-3239

61
FAUCET Score

CVE-2020-3239 describes multiple critical vulnerabilities in the REST API of Cisco UCS Director and Cisco UCS Director Express for Big Data. These flaws, including authentication bypass and directory traversal, allow a remote, low-privileged attacker to achieve high impact on confidentiality, integrity, and availability. With a CVSS score of 8.8 (HIGH) and a FAUCET Risk Score of 96/100, this vulnerability presents a significant risk. While no public exploit code (Metasploit, Nuclei, ExploitDB) is currently available and it is not listed in the KEV catalog, it has garnered community discussion and media coverage, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
6.0.0.0CPE matchmatch criteria
cpe:2.3:a:cisco:ucs_director:6.0.0.0:*:*:*:*:*:*:*
6.0.0.1CPE matchmatch criteria
cpe:2.3:a:cisco:ucs_director:6.0.0.1:*:*:*:*:*:*:*
6.0.1.0CPE matchmatch criteria
cpe:2.3:a:cisco:ucs_director:6.0.1.0:*:*:*:*:*:*:*
6.0.1.1CPE matchmatch criteria
cpe:2.3:a:cisco:ucs_director:6.0.1.1:*:*:*:*:*:*:*
6.0.1.2CPE matchmatch criteria
cpe:2.3:a:cisco:ucs_director:6.0.1.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
73.57%
Probability of exploitation in next 30 days
EPSS Percentile
99.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.7357 is in the 99th percentile among its peer group of 17,844 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, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

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-ucsd-mult-vulns-UNfpdW4E
Vendor Advisory
zerodayinitiative.com / advisories/ZDI-20-539
Third Party AdvisoryVDB Entry