High severity · published Apr 2, 2026
CVE-2026-5349
Trendnet TEW-657BRM setup.cgi add_apcdb stack-based overflow
8.8
CVSS
0.8%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TE
TEW-657BRM · Trendnet
1.00.1 · source: vendor
TF
Tew-657brm Firmware · Trendnet
1.00.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5349
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5349
Exploit
https://github.com/panda666-888/vuls/blob/main/trendnet/tew-657brm/add_apcdb.md
Third Party Advisory
https://vuldb.com/submit/781563
Third Party Advisory
https://vuldb.com/vuln/354702
Permissions Required
https://vuldb.com/vuln/354702/cti
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