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PowerProtect Data Domain CVE-2026-56084

| EUVDEUVD-2026-110810 MEDIUM
Server-Side Request Forgery (SSRF) (CWE-918)
2026-10-27 dell GHSA-788q-x36h-q33r
5.8
CVSS 3.1 · Vendor: dell
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Attack ChainAIDerived

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

  1. Access
    Reach appliance over network
  2. Exploit
    Send crafted SSRF request
  3. Execution
    Appliance issues attacker-directed request
  4. Impact
    Access internal resource or data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V4 - API and Web Service URL allowlisting, SSRF prevention
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Credential Access

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

Exploitation Conditions

Per the CVSS vector (AV:N/AC:L/PR:N/UI:N), no authentication or user interaction is required: a remote attacker with network access to the appliance's exposed service can attempt exploitation against default configurations of Dell PowerProtect Data Domain. The description does not name the exact feature, endpoint, or configuration setting that triggers the SSRF, so the precise trigger is not described in the available sources. Limiting factors: the attacker must have network reachability to the affected appliance (typically a protected backup/storage management interface rather than internet-facing), and direct impact is confined to a low confidentiality effect (I:N/A:N) - the value to an attacker depends on which internal services the appliance can be coerced to reach. Affected branches are Feature Release 7.7.1.0 through 8.7, 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; fixes are 7.13.1.90, 8.3.1.50, 8.6.1.30, and 8.9.0.0.

Impact

This is a moderate-risk vulnerability whose signals are consistent rather than conflicting. The CVSS 3.1 vector (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N, base 5.8) describes a network-reachable, low-complexity, unauthenticated flaw whose only direct impact is a low confidentiality effect across a changed scope - characteristic of SSRF (CWE-918), where the appliance can be coerced into issuing attacker-influenced requests to internal resources. There is no integrity or availability impact. No EPSS score, KEV listing, or PoC/exploit reference is present in the input, so there is no evidence of active exploitation or public exploit code; exploitation status is therefore 'no public exploit identified at time of analysis.' The vuln.today decision label is 'this_month' (not act_now or emergency), which aligns with a medium-severity, no-known-exploitation posture: a patch exists and should be applied on a normal prioritized cycle rather than as an emergency. The main caveat is that the description does not state which feature, endpoint, or parsing path triggers the SSRF, so the real-world reachability of the internal targets an attacker could pivot to is unverified from the available sources. Net: a genuine but not top-tier priority - unauthenticated and remote, but limited to low confidentiality impact with no confirmed exploitation.

Exploit ScenarioDerived

A remote, unauthenticated attacker sends a crafted request to an affected Dell PowerProtect Data Domain appliance, causing the appliance to issue a server-side request to an attacker-chosen destination, potentially reaching internal-only services or returning limited sensitive data. Because the CVSS vector is AV:N/AC:L/PR:N/UI:N with a changed scope, no authentication or user interaction is required and the impact can extend to systems beyond the appliance itself. No public proof-of-concept or exploit code is referenced in the available data.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 28, 2026

Server-side request forgery in Dell PowerProtect Data Domain lets a remote attacker who can reach the appliance's exposed service make the system issue requests on their behalf, with no authentication or user interaction required (CVSS 3.1: AV:N/AC:L/PR:N/UI:N). The flaw carries a changed-scope rating because the impact falls outside the vulnerable component's own security boundary, but the direct consequence is limited to a low confidentiality effect (C:L, I:N, A:N), with CVSS base score 5.8. Affected branches are Feature Release 7.7.1.0 through 8.7, 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; vendor-released fixes exist and no public exploit has been identified at time of analysis.

RemediationAI

Vendor-released patch is available: Dell documents fixed builds for every affected branch - LTS2024 7.13.1.90, LTS2025 8.3.1.50, LTS2026 8.6.1.30, and 8.9.0.0 for the remaining Feature Release and later streams - so upgrade the appliance to the fixed build matching its release train, following Dell DSA-2026-416 at https://www.dell.com/support/kbdoc/en-us/000515178/dsa-2026-416-security-update-for-dell-powerprotect-data-domain-multiple-vulnerabilities for the exact procedure and any additional fixes bundled with it. Because exploitation requires network reachability to the appliance's exposed service and no authentication, keeping Data Domain management interfaces on restricted, non-internet-facing network segments limits exposure until upgrades are completed; the trade-off is that backup and replication traffic must be re-checked against the tightened access rules so scheduled jobs are not interrupted. No public exploit has been identified at time of analysis, which supports scheduled rather than emergency patching, but the vendor advisory should be reviewed in full since it addresses more than this single CVE.

Affected VersionsENISA

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

CWE-918 (Server-Side Request Forgery) means the Data Domain appliance accepts attacker-influenced input that causes the server itself to perform an outbound request, so the attacker acts with the appliance's network position and trust relationships rather than their own. The scope-changed classification (S:C) reflects that the security authority of the vulnerable component does not bound the impact - requests issued by the appliance can reach resources the attacker could not address directly, which is why the confidentiality effect is rated low but the scope is not. Per the CVSS vector the attack is network-reachable and requires neither credentials (PR:N) nor user interaction (UI:N), so exposures depend on who can reach the appliance's interface; Data Domain systems are typically deployed as backup/storage targets on protected management networks rather than internet-facing, which is the main practical limiter. The Dell advisory does not name the specific feature, endpoint or parameter that triggers the SSRF, so the trigger is not described in the available sources, and the actual value of the flaw to an attacker depends on which internal services the appliance can be coerced into contacting. Exploitation status is unconfirmed: no CISA KEV listing and no verified exploit code in the supplied intelligence, and EPSS data was not provided for this CVE.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (dell) PRIMARY 5.8 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
vuln.today AI 5.8 MEDIUM

Unauthenticated network-reachable SSRF (PR:N/AV:N/AC:L/UI:N); scope changes as the appliance reaches other systems (S:C) with limited confidentiality exposure and no integrity/availability impact.

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

Primary rating from Vendor (dell).

CVSS VectorVendor: dell

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

Lifecycle Timeline

1
Patch available
Oct 27, 2026 - 12:01 EUVD

DescriptionCVE.org

Dell PowerProtect Data Domain, Feature Release versions 7.7.1.0 through 8.7, 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 a Server-Side Request Forgery (SSRF) vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Server-side request forgery.

Threat Intelligence Overview

EPSS Score
0.2%
Top 88% exploitable
Prevalence
Medium
widely used enterprise backup/dedup appliance, common but not in every environment
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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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
Yes
Human Impact· derived
Medium

Priority Score

29
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +29
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Server-Side Request Forgery exploits applications that fetch remote resources based on user-supplied URLs.

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-2026-26354 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-2026-86384 CRITICAL
9.8 Oct 28

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

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

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