CVE-2025-15245Public exploit

Authenticated file disclosure via unsanitized firmware path

Published Dec 30, 2025 · Updated Dec 30, 2025

Path traversal in D-Link DCS-850L 1.02.09 allows remote authenticated users on the local network to read device files. The uploadfirmware handler passes the user-controlled DownloadFile path to sub_42B634, which calls open() without rejecting traversal sequences. Low-privilege access to the adjacent network and firmware-update interface is required; successful exploitation exposes files readable by that service.

CVSS severity3.5
Low
EPSS probability0.61%
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 D-Link DCS-850L 1.02.09 allows remote authenticated users on the local network to read device files. The uploadfirmware handler passes the user-controlled DownloadFile path to sub_42B634, which calls open() without rejecting traversal sequences. Low-privilege access to the adjacent network and firmware-update interface is required; successful exploitation exposes files readable by that service.

The record

CVE
CVE-2025-15245
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
D-Link
Product
DCS-850L
Classifications
CWE-22, T1005
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 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=1.02.09

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

D-Link · DCS-850Lversion=1.02.09

Published CVSS scores

3.3NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
2.0VulDBCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
2.7VulDBAV:A/AC:L/Au:S/C:P/I:N/A:N
3.5VulDBCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

Public exploit references

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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