CVE-2026-5350

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

HIGH
8.8
CVSS Score
Published: April 2, 2026 at 03:30 PM UTC
Updated: July 24, 2026 at 08:20 PM UTC
2 products affected across 1 vendorTew 657BRM FirmwareTRENDnet TEW-657BRM

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Severity
HIGH8.8
Exploit prediction
EPSS 0.8%
SSVC
PoC

Description

A security flaw has been discovered in Trendnet TEW-657BRM 1.00.1. The impacted element is the function update_pcdb of the file /setup.cgi. The manipulation of the argument mac_pc_dba results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. 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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

trendnet-tew-657brm (same device)
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/vuln/354703
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/vuln/354703/cti
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/submit/781567

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHVulDB
Vector?

Quick Info

StatusANALYZED
CWE
CWE-121CWE-119

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