CVE-2026-4354Public exploitNetwork attack vector

Stored XSS via unescaped language setting

Published Mar 17, 2026 · Updated Mar 17, 2026

Stored XSS in the web interface of TRENDnet TEW-824DRU 1.010B01 and 1.04B01 allows remote authenticated users to inject script. The apply_sec.cgi action=lang handler stores the Language parameter in cameo.cameo.language and renders it verbatim into script and input HTML contexts. Low-privileged access and a later visit to the login interface are required; the payload runs in that user's browser and can corrupt the management interface.

CVSS severity3.5
Low
EPSS probability2.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in the web interface of TRENDnet TEW-824DRU 1.010B01 and 1.04B01 allows remote authenticated users to inject script. The apply_sec.cgi action=lang handler stores the Language parameter in cameo.cameo.language and renders it verbatim into script and input HTML contexts. Low-privileged access and a later visit to the login interface are required; the payload runs in that user's browser and can corrupt the management interface.

The record

CVE
CVE-2026-4354
Published
Mar 17, 2026
Updated
Mar 17, 2026
Vendor
TRENDnet
Product
TEW-824DRU
Classifications
CWE-79, CWE-94, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.010B01
  2. Affected versionversion=1.04B01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TRENDnet · TEW-824DRUversion=1.010B01; version=1.04B01

Published CVSS scores

4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/A:N
3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
2.0VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.007JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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