Security readout for executives and security teams
Plain-English summary
CVE-2026-26357 is a cross-site scripting issue in Dell Unisphere for PowerMax 9.2.4.x. A low-privileged remote user could cause malicious script to run in another user’s browser. Business impact is mainly theft of session data, information exposure, or unauthorized actions within the application context.
Executive priority
Treat as a medium-priority remediation item for storage management environments. Prioritize if Unisphere is broadly reachable, used by many operators, or manages high-value PowerMax infrastructure. It is not currently supported as actively exploited by the provided sources.
Technical view
The CVE describes CWE-79 improper neutralization during web page generation in Dell Unisphere for PowerMax 9.2.4.x. CVSS 3.1 is 5.4: network reachable, low attack complexity, low privileges required, user interaction required, changed scope, low confidentiality and integrity impact, no availability impact.
Likely exposure
Exposure is most relevant where Unisphere for PowerMax or its virtual appliance is reachable by low-privileged authenticated users. The source bundle names 9.2.4.x, but the affected-version data is incomplete and internally unclear, so confirm status against Dell’s advisory and asset inventory.
Exploitation context
No active exploitation is indicated in the provided sources, and the CVE is not listed as KEV in the bundle. Exploitation requires an authenticated low-privileged attacker and a victim user interaction, limiting urgency compared with unauthenticated server-side flaws.
Researcher notes
The CVE record provides the vulnerability class, CVSS vector, and impact, but not detailed vulnerable endpoints or proof details. The bundle’s affected-product entries appear ambiguous because they list versions while marking defaultStatus as unaffected. Validate against Dell’s advisory before making precise exposure claims.
Mitigation direction
- Review Dell advisory DSA-2025-425 for corrected versions and upgrade guidance.
- Restrict Unisphere access to trusted administrative networks and users.
- Use least privilege for Unisphere accounts until remediation is confirmed.
- Monitor for suspicious browser sessions or unexpected administrative actions.
Validation and detection
- Inventory Dell Unisphere for PowerMax and virtual appliance deployments.
- Check installed versions against Dell advisory DSA-2025-425.
- Confirm whether any 9.2.4.x instances remain accessible to non-admin users.
- Review access logs for unusual authenticated low-privilege activity.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-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 lookupCVE-2026-26357 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
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.
CVSS vector scores
1 official scoreWe 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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N2.32.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dell.com/support/kbdoc/en-us/000402262/dsa-2025-425-dell-powermaxos-dell-powermax-eem-dell-unisphere-for-powermax-dell-unisphere-for-powermax-virtual-appliance-dell-unisphere-360-dell-solutions-enabler-virtual-appliance-security-update-for-multiple-vulnerabilitiesCVE reference · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
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.