CVE-2026-75984Public exploitNetwork attack vectorHinoki check available

Authenticated command execution via hostname NVRAM poisoning

Published Aug 19, 2026 · Updated Aug 19, 2026

Command injection in /cgi-bin/admin.cgi in TRENDnet TEW-823DRU 1.1.02b01 allows remote authenticated users to execute OS commands via the hostname parameter. A published technical report states that the web handler stores attacker-controlled hostname data in NVRAM, and the sbin/rc component later passes nvram_get("hostname") output to system or _system without sanitization. Reachability depends on access to the router's management interface, which the published CVSS vectors rate as low-privilege authenticated access; the public PoC triggers execution after the poisoned setting is processed during reboot.

CVSS severity7.4
High
EPSS probability1.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Command injection in /cgi-bin/admin.cgi in TRENDnet TEW-823DRU 1.1.02b01 allows remote authenticated users to execute OS commands via the hostname parameter. A published technical report states that the web handler stores attacker-controlled hostname data in NVRAM, and the sbin/rc component later passes nvram_get("hostname") output to system or _system without sanitization. Reachability depends on access to the router's management interface, which the published CVSS vectors rate as low-privilege authenticated access; the public PoC triggers execution after the poisoned setting is processed during reboot.

The record

CVE
CVE-2026-75984
Published
Aug 19, 2026
Updated
Aug 19, 2026
Vendor
TRENDnet
Product
TEW-823DRU
Classifications
CWE-74, CWE-77, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 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=1.1.02b01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TRENDnet · TEW-823DRUversion=1.1.02b01

Published CVSS scores

7.4VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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:L/SI:L/SA:L/E:P
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-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('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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