CVE-2026-7609Public exploitNetwork attack vector

Authenticated command execution via traceroute IP injection

Published May 2, 2026 · Updated May 2, 2026

OS command injection in TRENDnet TEW-821DAP firmware 1.12B01 allows remote authenticated users to execute arbitrary commands. The tools_diagnostic handler passes the user-supplied ip_addr value into a traceroute shell command after validation that fails to reject ;, |, and $ metacharacters. Access to the authenticated web-management diagnostic request is required, and injected commands execute on the appliance or can interrupt its service.

CVSS severity8.8
High
EPSS probability4.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in TRENDnet TEW-821DAP firmware 1.12B01 allows remote authenticated users to execute arbitrary commands. The tools_diagnostic handler passes the user-supplied ip_addr value into a traceroute shell command after validation that fails to reject ;, |, and $ metacharacters. Access to the authenticated web-management diagnostic request is required, and injected commands execute on the appliance or can interrupt its service.

The record

CVE
CVE-2026-7609
Published
May 2, 2026
Updated
May 2, 2026
Vendor
TRENDnet
Product
TEW-821DAP
Classifications
CWE-77, CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

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

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=1.12B01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TRENDnet · TEW-821DAPversion=1.12B01

Published CVSS scores

6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell

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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