CVE-2025-43907VulnerabilityPublished 7 Oct 2025

CVE-2025-43907: Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature Release · Path Traversal: '.../...//'

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

Not known to be exploited · CVSS 6.5 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score

6.5Medium

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 32% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

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: 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: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within 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 2026-10-26.

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

1. Monitor Dell’s official security advisories closely and apply patches or firmware updates promptly once released to remediate the vulnerability. 2. Restrict network access to Data Domain systems by implementing strict firewall rules, allowing only trusted management and backup servers to communicate with these devices. 3. Employ network segmentation to isolate backup infrastructure from general user networks and the internet to reduce exposure. 4. Enable and review detailed logging and alerting on Data Domain systems to detect unusual file access patterns or unauthorized attempts. 5. Conduct regular vulnerability assessments and penetration testing focusing on backup infrastructure to identify potential exploitation attempts. 6. Use multi-factor authentication and strong access controls for administrative interfaces to minimize the risk of credential compromise. 7. Educate security teams about the specific path traversal technique ('.../...//') to improve detection capabilities in intrusion detection systems or web application firewalls. 8. Consider temporary compensating controls such as disabling unnecessary services or interfaces on affected systems until patches are applied.

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 Path Traversal: '.../...//' vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to Information exposure.

Impact

For European organizations, this vulnerability poses a risk of unauthorized disclosure of sensitive backup data stored on Dell PowerProtect Data Domain systems. Such data often includes critical business information, personally identifiable information (PII), or intellectual property. Exposure could lead to regulatory compliance violations under GDPR, reputational damage, and potential competitive disadvantage. Since the vulnerability allows remote exploitation with low privileges and no user interaction, attackers could leverage it to gain insights into backup contents without triggering immediate detection. This is particularly concerning for sectors with stringent data protection requirements such as finance, healthcare, and government. The lack of impact on integrity or availability means the systems may continue operating normally, potentially delaying detection of the breach. Organizations relying heavily on Dell Data Domain for data protection must consider this vulnerability a significant confidentiality risk until patched.

CWE-35Path Traversal: '.../...//' (opens in a new tab)
Variant weaknessOWASP Top 10 A01:2021: Broken Access Control (opens in a new tab)
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '.../...//' (doubled triple dot slash) sequences that can resolve to a location that is outside of that directory.
Implementation · Input Validation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
Implementation · Input Validation
Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174).
OWASP ASVS 4.0.3
V12.3.1 (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)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 7 Oct 2025, 18:45 UTC

WeaknessesCWE-35

Technical details

References

Community reviews

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