Vulnerability details

CVE-2026-5349

Trendnet TEW-657BRM

Trendnet TEW-657BRM setup.cgi add_apcdb stack-based overflow

CVSS 4.0

8.7High

Official description

A vulnerability was identified in Trendnet TEW-657BRM 1.00.1. The affected element is the function add_apcdb of the file /setup.cgi. The manipulation of the argument mac_pc_dba leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit is publicly available and might 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.

CVSS scores

Score	Version	Source	Vector
8.7High	4.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`
8.8High	3.1	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
8.8High	3.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
9.0High	2.0	CVEProject cvelistV5 (CNA) (VulDB)	`AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR`

Affected products

Vendor	Product	Versions	Source
Trendnet	TEW-657BRM	1.00.1	CVEProject cvelistV5 (CNA)

References and advisories

https://vuldb.com/vuln/354702 vdb-entrytechnical-description
https://vuldb.com/vuln/354702/cti signaturepermissions-required
https://vuldb.com/submit/781563 third-party-advisory
https://github.com/panda666-888/vuls/blob/main/trendnet/tew-657brm/add_apcdb.md exploit

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Details

Published: 2026-04-02
Last updated: 2026-04-02
State: Published
Assigner (CNA): VulDB

Exploit prediction (EPSS)

0.78%

Probability of exploitation in 30 days

56.2%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-121
Stack-based Buffer Overflow
CWE-119
Memory Corruption