CVE-2026-86400
CriticalCVSS 9.8Exploitation Probability (EPSS)
Elevated risk60th percentile - higher than 60% of all known CVEs
Summary
Dell PowerProtect Data Domain contains an Improper Authentication vulnerability. An unauthenticated attacker with remote access could exploit it to execute arbitrary commands with root privileges, allowing complete system takeover.
Risk Assessment
This is a critical severity vulnerability — an unauthenticated remote attacker can gain full control of the backup appliance, risking data theft or destruction and further lateral movement.
Recommendation
Upgrade to the latest patched version as soon as possible as recommended by the vendor, and limit the appliance's network exposure.
Other vulnerabilities in Dell PowerProtect Data Domain
See all- CVE-2026-90730Medium
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 an Improper Access Control vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to denial of service.
- CVE-2026-103780Critical
Dell PowerProtect Data Domain contains a Stack-based Buffer Overflow vulnerability. An unauthenticated attacker with remote access could exploit it to achieve command execution.
- CVE-2026-86384Critical
Dell PowerProtect Data Domain contains a Use of Hard-coded Cryptographic Key vulnerability. An unauthenticated attacker with remote access could exploit this vulnerability, leading to credential exposure.
- CVE-2026-86397Critical
Dell PowerProtect Data Domain contains an Improper Authentication vulnerability. An unauthenticated attacker with remote access could exploit it to create a privileged account, leading to complete system takeover.
- CVE-2026-53483Critical
An improper authentication vulnerability has been discovered in Dell PowerProtect Data Domain. An unauthenticated attacker with remote access could exploit this flaw to gain unauthorized access. This is a critical severity vulnerability as it allows complete system takeover.
- CVE-2026-53481Critical
A path traversal vulnerability has been discovered in Dell PowerProtect Data Domain. An unauthenticated attacker with remote access could exploit this flaw to gain unauthorized access to the system. This is a critical severity vulnerability as it allows complete system compromise.
- CVE-2026-86378High
Dell PowerProtect Data Domain contains a Stack-based Buffer Overflow vulnerability. A low-privileged attacker with remote access could exploit it to gain unauthorized access.
- CVE-2026-86377High
Dell PowerProtect Data Domain contains an Out-of-bounds Write vulnerability. A low-privileged attacker with remote access could exploit it to cause a denial of service.
- CVE-2026-110541High
Dell PowerProtect Data Domain contains an OS Command Injection vulnerability due to improper neutralization of special elements used in OS commands. A high privileged attacker with remote access could exploit it to execute commands.
- CVE-2026-103779High
Dell PowerProtect Data Domain contains an Improper Authentication vulnerability. A low privileged attacker with remote access could exploit it to bypass protection mechanisms.
Original NVD description (English source)
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 Authentication vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to arbitrary command execution with root privileges. This is a critical severity vulnerability as it allows an attacker to take complete control of the system. Dell recommends customers to upgrade at the earliest opportunity.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

