Description
A vulnerability was found in D-Link DCS-850L 1.02.09. Affected is the function uploadfirmware of the component Firmware Update Service. The manipulation of the argument DownloadFile results in path traversal. The attack must originate from the local network. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.
Affected products
dlink: dcs-850l firmware; dlink: dcs-850l
References5
- tzh00203.notion.site/D-Link-DCS850L-v1-02-09-Path-Traversal-Vul… ExploitThird Party Advisory
- vuldb.com/?ctiid.338635 Permissions RequiredVDB Entry
- vuldb.com/?id.338635 Third Party AdvisoryVDB Entry
- vuldb.com/?submit.725742 Third Party AdvisoryVDB Entry
- www.dlink.com/ Product
Metrics
- CVSS 3.1
-
3.3
LOW
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - CVSS 4.0
-
2.0
LOW
Score source: CNA
CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 1% percentile: 48 · as of 11 November 2026
- CWE
- CWE-22
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.