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No exploitation reported

CVE-2026-129352

TRENDnet TEW-657BRM upgrade_flash.cgi stack-based overflow

No exploitation reported by the sources we read.

  • Published2026-11-14
  • WeaknessCWE-119 · CWE-121

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability was detected in TRENDnet TEW-657BRM 1.00.1. This issue affects some unknown processing of the file /usr/sbin/upgrade_flash.cgi. Performing a manipulation of the argument boundary results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used. The vendor explains: ""I am not able to confirm if such vulnerability exists as the product has been EOL for more than 15 years. We will send out an announcement letting customers know."

Timeline

dates in UTC
  1. 2026-11-1423:00CVE publishedCNA

Versions per branch

Products declared by the CNA

As VulDB, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • TRENDnet TEW-657BRM
    Affected
    • = 1.00.1no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-14

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-129352 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 4.09.42026-11-14
  • CNACVSS 3.19.12026-11-14
  • NVDCVSS 3.19.1read 2026-11-14
  • CNACVSS 3.09.12026-11-14
  • CNACVSS 2.08.32026-11-14
  • CNAweakness (CWE)CWE-119, CWE-1212026-11-14
  • NVDweakness (CWE)CWE-119, CWE-121read 2026-11-14

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS 4.0 vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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
Published
2026-11-14
Last Modified
2026-11-14
NVD status
Deferred

Frequently asked questions

What is CVE-2026-129352?

A vulnerability was detected in TRENDnet TEW-657BRM 1.00.1. This issue affects some unknown processing of the file /usr/sbin/upgrade_flash.cgi. Performing a manipulation of the argument boundary results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used. The vendor explains: ""I am not able to confirm if such vulnerability exists as the product has been EOL for more than 15 years. We will send out an announcement letting customers know."

Is CVE-2026-129352 actively exploited?

Active exploitation of CVE-2026-129352 has not been confirmed.

What is the CVSS score for CVE-2026-129352?

CVE-2026-129352 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

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