Skip to main content

PowerProtect Data Domain EUVDEUVD-2026-111839

| CVE-2026-86399 HIGH
OS Command Injection (CWE-78)
2026-10-28 dell GHSA-6m5q-9x85-3w6x
7.2
CVSS 3.1 · Vendor: dell
View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain high-privilege appliance access
  2. Delivery
    Reach vulnerable command-handling feature
  3. Exploit
    Inject crafted OS command input
  4. Execution
    Execute arbitrary commands on appliance
  5. Impact
    Compromise backup data and system

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization OS command sanitization, avoid shell exec
MITRE ATT&CK

2 techniques across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires the attacker to already hold high (administrative) privileges on the Dell PowerProtect Data Domain appliance (CVSS PR:H) and network access to the management interface; no user interaction is needed (UI:N). The specific product feature or command that improperly neutralizes special elements is not named in the available sources, so the exact trigger is not described in the available sources. Limiting factors: the high-privilege prerequisite sharply narrows the realistic attacker set to credentialed admins, compromised admin accounts, or insiders; the affected set is bounded to the listed Feature Release (7.7.1.0 through 8.8), LTS2024 (7.13.1.0-7.13.1.80), LTS2025 (8.3.1.0-8.3.1.40), and LTS2026 (8.6.1.0-8.6.1.20) version ranges.

Impact

This is a moderate-severity, high-barrier issue rather than an urgent widespread threat. The CVSS 3.1 vector (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H, base 7.2) describes an OS command injection reachable over the network but gated by PR:H - the attacker must already hold high (administrative) privileges on the appliance, which is the dominant limiting factor. Impact is full (C:H/I:H/A:H) because command execution on a backup/dedup appliance can compromise stored data and the system itself. No EPSS score, KEV listing, or PoC was provided in the input, so there is no signal of active or probable exploitation: exploitation status is 'no public exploit identified at time of analysis.' The vuln.today Decision label is 'this_week,' indicating a near-term remediation priority but not emergency/act_now urgency. Net: a genuine privilege-escalation/post-authentication risk worth patching on a prompt (this-week) cadence, but the PR:H requirement makes it meaningfully lower real-world risk than an unauthenticated RCE of similar score. Note that the CVSS vector lists AV:N yet the flaw requires an already-high-privileged operator, so the practical exposure is to attackers who have compromised admin credentials or to malicious/compromised insiders - verify the exact remote-access surface with the Dell advisory.

Exploit ScenarioDerived

An attacker who has already obtained high-privilege (administrative) access to a Dell PowerProtect Data Domain appliance - via stolen admin credentials or an insider - submits crafted input to a feature that passes it into an OS command, injecting attacker-controlled shell commands. The injected command runs on the appliance, giving full command execution and potential compromise of backup data integrity and availability. No public exploit code was identified in the provided data, and the network vector still presupposes the high privilege level from the CVSS vector.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 2.2% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAIv1 – Oct 28, 2026

OS command injection in Dell PowerProtect Data Domain lets a remote attacker who already holds high (administrative) privileges on the appliance execute arbitrary operating system commands, with high impact on confidentiality, integrity and availability of the backup infrastructure. The affected set is bounded to Feature Release 7.7.1.0 through 8.8, LTS2024 7.13.1.0 through 7.13.1.80, LTS2025 8.3.1.0 through 8.3.1.40, and LTS2026 8.6.1.0 through 8.6.1.20; no public exploit was identified at time of analysis, and the mandatory PR:H prerequisite (unauthenticated access is not sufficient) narrows the realistic attacker set to credentialed administrators, compromised admin accounts and insiders. Dell rates the issue 7.2 with an AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H vector, matching an independent assessment that treats it as a moderate-severity, high-barrier problem rather than an urgent widespread threat, with remediation tracked for this week.

RemediationAI

Apply the Dell fix for DSA-2026-416 (https://www.dell.com/support/kbdoc/en-us/000515178/dsa-2026-416-security-update-for-dell-powerprotect-data-domain-multiple-vulnerabilities); that advisory is the authoritative source for the exact remediated build on each train, since the available data identifies the vulnerable ranges (Feature Release 7.7.1.0-8.8, LTS2024 7.13.1.0-7.13.1.80, LTS2025 8.3.1.0-8.3.1.40, LTS2026 8.6.1.0-8.6.1.20) but does not enumerate the fixed version numbers, so upgrade to a build above the affected ceiling for your branch as listed by Dell and treat any build still inside those ranges as exposed. No vendor workaround is documented in the available sources, so the complete fix is updating rather than configuration hardening. Because the assessed prerequisite is administrative privilege plus network reach to the management interface, interim risk reduction centers on shrinking that exposure: restrict management-interface reachability to trusted administration networks with firewall or ACL rules, accepting that this breaks legitimate remote admin workflows from other zones, and audit or reduce the set of accounts holding admin rights and rotate credentials, which limits blast radius if an admin account is already compromised but does not close the underlying injection flaw. Prioritize the LTS branches, which are typically the long-lived production installs.

Affected VersionsENISA

PowerProtect Data Domain 0 <8.9.0.0 or later
PowerProtect Data Domain 0 <8.3.1.50 or later
PowerProtect Data Domain 0 <8.6.1.30 or later
PowerProtect Data Domain 0 <7.13.1.90 or later

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The flaw is CWE-78, improper neutralization of special elements used in an OS command, in Dell PowerProtect Data Domain - the Data Domain deduplication storage appliance line used as a backup and recovery target. In this class of bug, data supplied through an application-level interface is passed into a shell or command-execution API without adequate escaping or allow-listing, so shell metacharacters or argument separators are interpreted by the underlying operating system instead of being treated as literal input; successful injection runs commands with the privileges of the appliance process, here reachable over the network with AC:L and no user interaction (UI:N) but gated behind administrative rights (PR:H) and confined to the unchanged scope (S:U). The CPE cpe:2.3:a:dell:powerprotect_data_domain:*:*:*:*:*:*:*:* confirms the affected platform but does not resolve to individual builds, so version exposure must be determined from the Dell ranges. The specific product feature, CLI/API endpoint or command that fails to neutralize special elements is not named in the available sources, so the exact trigger is not described in the available sources; the assessment rests on the vendor advisory and the CVSS vector rather than on a published technical root-cause write-up.

Know when Powerprotect Data Domain gets its next vulnerability

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources

No credit card · 7-day full trial

Severity by source

Vendor (dell) PRIMARY 7.2 HIGH
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 7.2 HIGH

Network-reachable management interface (AV:N) with no described added complexity (AC:L), but exploitation requires existing administrative access (PR:H); command execution yields full C/I/A impact.

3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (dell).

CVSS VectorVendor: dell

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Patch available
Oct 28, 2026 - 10:16 EUVD
CVE Published
Oct 28, 2026 - 08:54 cve.org
HIGH 7.2

DescriptionCVE.org

Dell PowerProtect Data Domain, Feature Release versions 7.7.1.0 through 8.8, LTS2024 release versions 7.13.1.0 through 7.13.1.80, LTS2025 release versions 8.3.1.0 through 8.3.1.40, LTS2026 release versions 8.6.1.0 through 8.6.1.20, contain an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to Command execution.

Executive ViewAI

Why It Matters

Dell PowerProtect Data Domain appliances used for enterprise backup are affected by a command injection flaw spanning several feature and long-term-support release lines, giving anyone with administrative credentials the ability to run arbitrary OS commands and compromise the confidentiality, integrity and availability of backup data. Because exploitation requires pre-existing high privilege, the realistic threat is internal misuse or abuse of compromised admin accounts rather than external attack, but the concentration of recovery data on these systems makes any integrity loss an enterprise-wide resilience concern. Leadership should care that recovery capabilities could be silently undermined by trusted insiders or stolen administrator credentials at a time when no vendor fix is yet available.

Business Impact: Medium
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: restrict management access to dedicated segmented networks, enforce MFA and least-privilege administration, rotate and monitor privileged credentials, enable detailed audit logging and alerting on admin sessions, and isolate backup appliances from general-purpose networks.

Threat Intelligence Overview

EPSS Score
2.2%
Top 18% exploitable
Prevalence
Medium
enterprise backup/dedup appliance, common in data centers but not universal
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 2.2%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
Medium

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: +2
CVSS: +36
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

CVE-2026-53481 CRITICAL
9.8 Jul 07

Path traversal leading to full system compromise affects Dell PowerProtect Data Domain (DD OS) versions 7.7.1.0 through

CVE-2026-53483 CRITICAL
9.8 Jul 07

Improper authentication in Dell PowerProtect Data Domain (versions 7.7.1.0 through 8.7, plus the LTS2026, LTS2025, and L

CVE-2026-86384 CRITICAL
9.8 Oct 28

Remote, unauthenticated attackers can obtain exposed credentials from Dell PowerProtect Data Domain appliances running F

CVE-2026-26354 CRITICAL
9.8 Apr 22

Stack-based buffer overflow in Dell PowerProtect Data Domain DD OS allows remote unauthenticated attackers to execute ar

CVE-2026-103780 CRITICAL
9.8 Oct 28

Unauthenticated remote command execution is possible on Dell PowerProtect Data Domain appliances running Feature Release

CVE-2026-86400 CRITICAL
9.8 Oct 28

Improper authentication in Dell PowerProtect Data Domain allows remote unauthenticated attackers to bypass authenticatio

CVE-2026-86385 HIGH
8.8 Oct 28

Privilege escalation in Dell PowerProtect Data Domain Feature Release 7.7.1.0 through 8.8 allows an authenticated, low-p

CVE-2025-29987 HIGH
8.8 Apr 03

Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) versions prior to 8.3.0.15 contain an Insufficie

CVE-2026-23776 HIGH
8.8 Apr 17

Improper certificate validation in Dell PowerProtect Data Domain DD OS 7.7.1.0-8.5, 8.3.1.0-8.3.1.20 (LTS2025), and 7.13

CVE-2026-86378 HIGH
8.8 Oct 28

Stack-based buffer overflow in Dell PowerProtect Data Domain allows a low-privileged authenticated remote attacker to po

CVE-2026-86398 HIGH
8.8 Oct 28

Dell PowerProtect Data Domain appliances running Feature Release 7.7.1.0 through 8.8, LTS2024 7.13.1.0 through 7.13.1.80

CVE-2026-23853 HIGH
8.4 Apr 17

Local attackers can gain full system access to Dell PowerProtect Data Domain storage systems without authentication due

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy