VDB-338635 · Submit #725742 · CVE-2025-15245

D-Link DCS-850L 1.02.09 Firmware Update Service uploadfirmware DownloadFile path traversal

Summaryinfo

A vulnerability has been found in D-Link DCS-850L 1.02.09 and classified as critical. Affected by this vulnerability is the function uploadfirmware of the component Firmware Update Service. This manipulation of the argument DownloadFile causes path traversal. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is registered as CVE-2025-15245. The attack requires access to the local network. Furthermore, an exploit is available.

Detailsinfo

A vulnerability classified as problematic was found in D-Link DCS-850L 1.02.09. Affected by this vulnerability is the function uploadfirmware of the component Firmware Update Service. The manipulation of the argument DownloadFile with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality.

It is possible to read the advisory at tzh00203.notion.site. This vulnerability is known as CVE-2025-15245. The exploitation appears to be easy. The attack needs to be done within the local network. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

It is possible to download the exploit at tzh00203.notion.site. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

D-Link

Name

DCS-850L

Version

1.02.09

License

commercial

Support

end of life

Website

Vendor: https://www.dlink.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 3.4
VulDB Meta Temp Score: 3.3

VulDB Base Score: 3.5
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 3.3
NVD Vector: 🔒

CNA Base Score: 3.5
CNA Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

12/29/2025 Advisory disclosed
12/29/2025 +0 days VulDB entry created
01/01/2026 +3 days VulDB entry last update

Sourcesinfo

Vendor: dlink.com

Advisory: tzh00203.notion.site
Status: Not defined

CVE: CVE-2025-15245 (🔒)
GCVE (CVE): GCVE-0-2025-15245
GCVE (VulDB): GCVE-100-338635
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 12/29/2025 09:28
Updated: 01/01/2026 07:40
Changes: 12/29/2025 09:28 (57), 12/30/2025 13:17 (30), 01/01/2026 07:40 (10)
Complete: 🔍
Submitter: tian
Cache ID: 216::103

Submitinfo

Accepted

Submit #725742: D-Link DCS850L v1.02.09 Absolute Path Traversal (by tian)