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CVE Record

CVE-2018-1251: Dell EMC Unity and UnityVSA versions prior to 4.3.1.1525703027 contains a URL Redirection vulnerability.

Dell EMC Unity and UnityVSA versions prior to 4.3.1.1525703027 contains a URL Redirection vulnerability. A remote unauthenticated attacker could potentially exploit this vulnerability to redirect Unity users to arbitrary web URLs by tricking the victim user to click on a maliciously crafted Unisphere URL. Attacker could potentially phish information, including Unisphere users' credentials, from the victim once they are redirected.

HighCVSS 8.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

Dell EMC Unity and UnityVSA before 4.3.1.1525703027 could let an unauthenticated attacker send a malicious Unisphere link that redirects users to an attacker-chosen site. The main business risk is credential phishing against storage administrators, which can lead to broader operational exposure.

Executive priority

Prioritize remediation where Unity management is reachable by many users or administrators rely on emailed links. This is not proven actively exploited in the provided sources, but it targets privileged storage administration credentials, making timely upgrade and access restriction justified.

Technical view

CVE-2018-1251 is a URL redirection vulnerability in Dell EMC Unity and UnityVSA Unisphere URLs. Exploitation is network-reachable, low complexity, unauthenticated, but requires user interaction. The published CVSS v3.0 score is 8.3 high, with high confidentiality and integrity impact and low availability impact.

Likely exposure

Organizations running Dell EMC Unity or UnityVSA management interfaces below 4.3.1.1525703027 are potentially exposed, especially where administrators can receive and open external links to Unisphere. Exposure depends on product presence, version, admin access patterns, and management interface reachability.

Exploitation context

The source bundle does not show CISA KEV listing or confirmed active exploitation. The described attack requires tricking a user into clicking a crafted Unisphere URL, then redirecting them to an arbitrary web URL for possible phishing, including Unisphere credentials.

Researcher notes

Evidence is limited to the CVE record and Dell EMC advisory reference. No CWE, exploit sample, or active exploitation confirmation is provided. Treat this as a user-interaction open redirect issue with phishing consequences, and validate exposure through version inventory and management-plane access review.

Mitigation direction

  • Upgrade affected Unity and UnityVSA systems to 4.3.1.1525703027 or later per Dell EMC guidance.
  • Review Dell EMC advisory DSA-2018-101 for related Unity Family vulnerabilities.
  • Restrict Unisphere access to trusted admin networks or VPN.
  • Use phishing-resistant MFA where available for administrative access.
  • Warn administrators not to trust unexpected Unisphere links.

Validation and detection

  • Inventory Dell EMC Unity and UnityVSA systems in the environment.
  • Confirm Unisphere software versions are 4.3.1.1525703027 or later.
  • Verify management interfaces are not broadly internet-accessible.
  • Review logs for unusual Unisphere redirect-related access patterns.
  • Confirm administrator credential protections and MFA coverage.
Prepared
Confidence
high
Sources
3

Public sources used

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.

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CVE-2018-1251 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.3 (3.0)
Known Exploited
No
Published

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

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
8.3CVSS 3.0HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L2.85.5Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

8.3High
CVSS 3.0 vector shape for CVE-2018-1251Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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
Dell EMCDell EMC UnityunspecifiedListed
Dell EMCDell EMC UnityVSAunspecifiedListed
Weakness

CWE details

No CWE listed

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