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CVE Record

CVE-2020-3464: Cisco UCS Director Stored Cross-Site Scripting Vulnerability

A vulnerability in the web-based management interface of Cisco UCS Director could allow an authenticated, remote attacker with administrative credentials to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability exists because the web-based management interface does not properly validate input. An attacker could exploit this vulnerability by inserting malicious data into a specific data field in the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit this vulnerability, an attacker would need administrative credentials on the affected device.

MediumCVSS 4.8Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2020-3464 is a stored XSS flaw in Cisco UCS Director’s web management interface. An attacker already holding administrative credentials could place malicious content in an interface field, potentially affecting another user who views it. Business risk is limited by the admin-credential requirement, but impact can include browser-based data exposure or interface actions in the victim’s session.

Executive priority

Treat this as a moderate-priority management-plane issue. It is unlikely to drive emergency action without evidence of exposed UCS Director access or compromised administrators, but affected systems should be checked and remediated during the next security maintenance cycle.

Technical view

Cisco describes improper input validation in UCS Director’s web-based management interface, classified as CWE-79. The CVSS 3.1 score is 4.8: network reachable, low attack complexity, high privileges required, user interaction required, changed scope, low confidentiality and integrity impact, and no availability impact.

Likely exposure

Exposure applies to environments running Cisco UCS Director. The source bundle does not identify affected or fixed versions beyond the product name, so inventory must be compared against Cisco’s advisory. Internet exposure is not stated; risk is most relevant where the management interface is accessible to administrators or compromised admin accounts.

Exploitation context

The provided sources do not show active exploitation, and the CVE is not listed as KEV. Exploitation requires administrative credentials on the affected device and a user interacting with the affected interface content. This makes it more of an insider, compromised-admin, or post-compromise risk than an unauthenticated perimeter issue.

Researcher notes

The source bundle lacks affected-version and fix-version detail. Keep analysis scoped to Cisco UCS Director and avoid broad Cisco UCS assumptions. The privilege requirement is high, user interaction is required, and the expected impact is limited to browser-context confidentiality and integrity effects.

Mitigation direction

  • Review Cisco’s advisory for affected and fixed UCS Director releases.
  • Apply Cisco-recommended updates or workarounds if your version is affected.
  • Limit UCS Director administrative access to trusted users and management networks.
  • Audit and remove unnecessary administrative accounts.
  • Monitor for suspicious administrative changes in the web interface.

Validation and detection

  • Confirm whether Cisco UCS Director is deployed in the environment.
  • Record the installed UCS Director version and compare it with Cisco’s advisory.
  • Identify who has administrative access to UCS Director.
  • Review recent administrative interface changes for unexpected stored content.
  • Do not assume unauthenticated scanning validates this issue.
Prepared
Confidence
high
Sources
3

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-79: User-session and phishing behavior lookup

Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2020-3464 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
4.8CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N1.72.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.8Medium
CVSS 3.1 vector shape for CVE-2020-3464Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
CiscoCisco UCS Directorn/aListed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-79 · source CWE mapping

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.