VulnerabilityPublished 28 Oct 2026

CVE-2026-86391: Dell PowerProtect Data Domain Management Center · Authentication Bypass by Spoofing

Affects Dell PowerProtect Data Domain Management CenterSource CVE Database V5

Not known to be exploited · CVSS 6.4 Medium · fixed in 8.9.0.0 or later : update Dell PowerProtect Data Domain Management Center when convenient.

Data as of 28 Oct 2026, 09:57 UTC

CVSS 3.1 base score

6.4Medium

How severe the flaw is on the 0–10 CVSS scale.

Patch: Available – fixed in 8.9.0.0 or later, 8.6.1.30 or later, 8.3.1.50 or later +1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L

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

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 28 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Dell PowerProtect Data Domain Management Center to 8.9.0.0 or later, 8.6.1.30 or later, 8.3.1.50 or later or 7.13.1.90 or later.

Affected software

Product	Affected	Fixed in
DellPowerProtect Data Domain Management Center	Affected =0	Fixed in 8.9.0.0 or later 8.6.1.30 or later 8.3.1.50 or later 7.13.1.90 or later

AI-suggested

Apply the official patches provided by Dell. Upgrade affected versions to 8.9.0.0 or later for Feature Releases, 8.6.1.30 or later for LTS2026, 8.3.1.50 or later for LTS2025, and 7.13.1.90 or later for LTS2024 to remediate this vulnerability.

Description

Dell PowerProtect Data Domain Management Center versions 7.7.1.0 through 8.8, including specific LTS releases, contain an authentication bypass vulnerability by spoofing. This flaw allows a low privileged remote attacker to potentially cause denial of service. The vulnerability is identified as CWE-290 and has a CVSS 3.1 score of 6.4 (medium severity).

Impact

A low privileged remote attacker can exploit this authentication bypass vulnerability to cause denial of service on affected Dell PowerProtect Data Domain Management Center systems. There is no indication of confidentiality impact, but integrity and availability impacts are present. No known exploits in the wild have been reported.

Summary

CVE-2026-86391 describes an authentication bypass vulnerability in Dell PowerProtect Data Domain Management Center across multiple feature and LTS release versions. The issue allows a low privileged attacker with remote access to bypass authentication mechanisms by spoofing, which can lead to denial of service conditions. The vulnerability affects Feature Release versions 7.7.1.0 through 8.8, LTS2024 versions 7.13.1.0 through 7.13.1.80, LTS2025 versions 8.3.1.0 through 8.3.1.40, and LTS2026 versions 8.6.1.0 through 8.6.1.20. Fixed versions are 8.9.0.0 or later, 8.6.1.30 or later, 8.3.1.50 or later, and 7.13.1.90 or later respectively.

CWE-290Authentication Bypass by Spoofing (opens in a new tab)
Base weaknessOWASP Top 10 A07:2025: Authentication Failures (opens in a new tab)
This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.
OWASP Cheat Sheets
REST Security (opens in a new tab)
JSON Web Token for Java (opens in a new tab)
OWASP Authentication (opens in a new tab)
OWASP ASVS 4.0.3
V3.5.1 (opens in a new tab)
V2.8.5 (opens in a new tab)
V2.8.4 (opens in a new tab)
Attack patterns
Creating a Rogue Certification Authority Certificate (opens in a new tab)
Web Services API Signature Forgery Leveraging Hash Function Extension Weakness (opens in a new tab)
Signature Spoof (opens in a new tab)
Signature Spoofing by Misrepresentation (opens in a new tab)
Session Credential Falsification through Prediction (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

dell.com/support/kbdoc/en-us/000515178/dsa-2026-416-security-update-for-dell-powerprotect-data-domain-multiple-vulnerabilities (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 28 Oct 2026, 09:44 UTC

WeaknessesCWE-290

Technical details

References

Community reviews

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