CVE-2025-43910VulnerabilityPublished 7 Oct 2025

CVE-2025-43910: Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature Release · Stack-based Buffer Overflow

Affects Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature ReleaseSource CVE Database V5

Not known to be exploited · CVSS 2.3 Low.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

2.3Low

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

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

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within 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 7 Oct 2025
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 2026-10-25.

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 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

Affected software

Product	Affected	Fixed in
Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature Release	Affected =7.7.1.0	Fixed in–

AI-suggested

To mitigate CVE-2025-43910, European organizations should implement the following specific measures: 1) Restrict and tightly control local administrative access to Dell PowerProtect Data Domain systems, ensuring only authorized personnel have high privileges. 2) Monitor and audit DDSH CLI usage for unusual or unauthorized commands that could indicate exploitation attempts. 3) Apply principle of least privilege to limit the number of users with local high-privileged access. 4) Isolate backup infrastructure networks to reduce the risk of lateral movement by attackers. 5) Maintain up-to-date system inventories to quickly identify affected versions and prioritize patching once Dell releases official updates. 6) Engage with Dell support to obtain early access to patches or workarounds. 7) Implement robust backup and recovery testing to ensure resilience against potential DoS disruptions. 8) Consider deploying host-based intrusion detection systems (HIDS) to detect anomalous behavior related to buffer overflow exploitation attempts. 9) Educate system administrators about the vulnerability and the importance of secure CLI usage practices. These targeted actions go beyond generic advice by focusing on access control, monitoring, and preparedness specific to the affected systems and vulnerability characteristics.

Description

Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature Release versions 7.7.1.0 through 8.3.0.15, LTS2025 release version 8.3.1.0, LTS2024 release versions 7.13.1.0 through 7.13.1.30, LTS 2023 release versions 7.10.1.0 through 7.10.1.60, contain a Stack-based Buffer Overflow vulnerability in the DDSH CLI. A high privileged attacker with local access could potentially exploit this vulnerability, leading to Denial of service.

Impact

For European organizations, the primary impact of CVE-2025-43910 is the potential for denial of service on Dell PowerProtect Data Domain systems, which are widely used for backup and data deduplication in enterprise environments. A successful exploit could disrupt backup and recovery operations, leading to temporary data unavailability and operational delays. While the vulnerability does not compromise data confidentiality or integrity, the loss of availability could affect business continuity, especially for organizations with strict recovery time objectives (RTOs). Critical sectors such as finance, healthcare, and government that rely on these systems for data protection may experience operational risks. The requirement for local high-privileged access limits the threat to insider threats or attackers who have already gained elevated access, reducing the likelihood of remote exploitation. However, the impact on availability could be significant if exploited in environments where system uptime is critical. The absence of known exploits reduces immediate risk but does not eliminate the need for vigilance. Organizations should consider the potential for targeted attacks by advanced threat actors aiming to disrupt backup infrastructure.

CWE-121Stack-based Buffer Overflow (opens in a new tab)
Variant weaknessLikelihood of exploit: HighCWE Top 25 (2025): #14
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
Operation · Build and Compilation · Environment Hardening
Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index…
Architecture and Design
Use an abstraction library to abstract away risky APIs. Not a complete solution.
Implementation
Implement and perform bounds checking on input.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

dell.com/support/kbdoc/en-us/000376224/dsa-2025-333-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 7 Oct 2025, 19:45 UTC

WeaknessesCWE-121

Technical details

References

Community reviews

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