CVE-2026-28263Network attack vector

Browser script execution via undisclosed input handling

Published Apr 17, 2026 · Updated Apr 17, 2026

Cross-site scripting in Dell PowerProtect Data Domain DD OS allows remote authenticated users to inject scripts through remote access. Dell has not disclosed the affected interface, input parameter, storage behavior, or missing neutralization operation. Exploitation requires high privileges and user interaction across Feature Release 7.7.1.0 through 8.5, LTS2025 8.3.1.0 through 8.3.1.20, and LTS2024 7.13.1.0 through 7.13.1.50, with script execution limited to an affected browser context.

CVSS severity5.9
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Dell PowerProtect Data Domain DD OS allows remote authenticated users to inject scripts through remote access. Dell has not disclosed the affected interface, input parameter, storage behavior, or missing neutralization operation. Exploitation requires high privileges and user interaction across Feature Release 7.7.1.0 through 8.5, LTS2025 8.3.1.0 through 8.3.1.20, and LTS2024 7.13.1.0 through 7.13.1.50, with script execution limited to an affected browser context.

The record

CVE
CVE-2026-28263
Published
Apr 17, 2026
Updated
Apr 17, 2026
Vendor
Dell Technologies
Product
PowerProtect Data Domain
Classifications
CWE-79
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.7.9 with DD OS 8.3.1.30
  2. Affected versionversion=0 <7.13.1.50 or later
  3. Affected versionversion=0 <8.3.1.20 or later
  4. Affected versionversion=0 <8.6.0.0 or later

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Dell Technologies · PowerProtect Data Domainversion=0 <2.7.9 with DD OS 8.3.1.30; version=0 <7.13.1.50 or later; version=0 <8.3.1.20 or later; version=0 <8.6.0.0 or later

Published CVSS scores

5.9DellCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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