CVE-2026-5355 - Trendnet TEW-657BRM setup.cgi vpn_drop os command injection

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MEDIUM

Trendnet TEW-657BRM setup.cgi vpn_drop os command injection

Published Apr 2, 2026

5.3

MEDIUM

CVSS 4.0

EPSS 5.73%

Description

A vulnerability has been found in Trendnet TEW-657BRM 1.00.1. Affected by this issue is the function vpn_drop of the file /setup.cgi. The manipulation of the argument policy_name leads to os command injection. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The vendor confirms, that "[t]he product in question (...) has been discontinued and end of life since June 23, 2011, that is more than 14 years ago. We no longer provide support for this product, so we are not able to confirm the vulnerabilities. We will make an announcement on our website's product support page and notify customers who registered their products with us." This vulnerability only affects products that are no longer supported by the maintainer.

Affected products

Vendor Trendnet Product Tew-657brm Default
n/a
- Version
  1.00.1
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Trendnet

Tew-657brm

n/a

Version	Status	Constraints
1.00.1	affected	-

Remediation

No remediation recorded yet.

Weaknesses (2)

CWE-77

CWE-78

OS Command Injection

References (5)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-18412
Advisory
https://github.com/panda666-888/vuls/blob/main/trendnet/tew-657brm/vpn_drop.md
exploitThird Party Advisory
https://vuldb.com/submit/781569
third-party-advisoryThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/354708
vdb-entrytechnical-descriptionThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/354708/cti
signaturepermissions-requiredPermissions RequiredVDB Entry

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-18412		Advisory
https://github.com/panda666-888/vuls/blob/main/trendnet/tew-657brm/vpn_drop.md		exploitThird Party Advisory
https://vuldb.com/submit/781569		third-party-advisoryThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/354708		vdb-entrytechnical-descriptionThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/354708/cti		signaturepermissions-requiredPermissions RequiredVDB Entry