CVE-2025-43886

Filesystem disruption via Hyper-V path traversal

Published Sep 10, 2025 · Updated Sep 10, 2025

Path traversal in the Hyper-V component of Dell PowerProtect Data Manager 19.19 and 19.20 allows local users to disrupt filesystem availability. The component fails to neutralize a crafted doubled-triple-dot path sequence before filesystem resolution, but Dell has not disclosed the exact code locus or affected file operation. Exploitation requires high privileges and local access to the Hyper-V environment; Dell reports no confidentiality or integrity impact.

CVSS severity4.4
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in the Hyper-V component of Dell PowerProtect Data Manager 19.19 and 19.20 allows local users to disrupt filesystem availability. The component fails to neutralize a crafted doubled-triple-dot path sequence before filesystem resolution, but Dell has not disclosed the exact code locus or affected file operation. Exploitation requires high privileges and local access to the Hyper-V environment; Dell reports no confidentiality or integrity impact.

The record

CVE
CVE-2025-43886
Published
Sep 10, 2025
Updated
Sep 10, 2025
Vendor
Dell
Product
PowerProtect Data Manager
Classifications
CWE-35, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=N/A <19.21 build 11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Dell · PowerProtect Data Managerversion=N/A <19.21 build 11

Published CVSS scores

4.4DellCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
4.4NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-35Path Traversal: '.../...//'
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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