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TRENDnet TEW-823DRU CVE-2026-75984

| EUVDEUVD-2026-62216 LOW
Command Injection (CWE-77)
2026-08-19 VulDB GHSA-8mjp-g8r8-8w7q
Command Injection Tew 823Dru
2.1
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
2.1 MEDIUM
CVSS: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/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
vuln.today AI
8.8 HIGH

PR:L reflects required authenticated session; command injection on embedded router firmware typically enables full system compromise across confidentiality, integrity, and availability.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

CVSS: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/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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
Analysis Generated
Aug 19, 2026 - 05:22 vuln.today
Severity Changed
Aug 19, 2026 - 01:22 NVD
MEDIUM LOW
CVSS changed
Aug 19, 2026 - 01:22 NVD
5.3 (MEDIUM) 2.1 (LOW)
CVE Published
Aug 19, 2026 - 01:00 cve.org
LOW 2.1

DescriptionCVE.org

A vulnerability was detected in TRENDnet TEW-823DRU 1.1.02b01. Impacted is an unknown function of the file /cgi-bin/admin.cgi. The manipulation of the argument Hostname results in command injection. The attack can be launched remotely. The exploit is now public and may be used.

AnalysisAI

Command injection in TRENDnet TEW-823DRU firmware version 1.1.02b01 allows a network-accessible, low-privileged authenticated attacker to execute arbitrary OS commands by manipulating the Hostname parameter in the /cgi-bin/admin.cgi endpoint. The flaw is classified as CWE-77 and carries a CVSS 4.0 base score of 2.1 with the E:P threat modifier applied, reflecting a publicly available proof-of-concept exploit on GitHub. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain low-privilege web UI credentials
Delivery
Send crafted HTTP request to /cgi-bin/admin.cgi
Exploit
Inject shell metacharacters in Hostname parameter
Execution
CGI handler passes unsanitized input to OS command
Impact
Execute arbitrary commands on router firmware
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Vulnerability AssessmentAI

Exploitation Exploitation requires network reachability to the TRENDnet TEW-823DRU's web management interface (/cgi-bin/admin.cgi) and a valid low-privileged authenticated session (confirmed by CVSS 4.0 PR:L). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 base score of 2.1 is notably low for command injection and warrants scrutiny. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has obtained or guessed low-privilege credentials to the TEW-823DRU web management interface sends a crafted HTTP POST or GET request to /cgi-bin/admin.cgi, embedding shell metacharacters in the Hostname parameter (for example, appending a semicolon followed by an arbitrary command). The CGI handler passes the unsanitized parameter to an OS-level command, executing the injected payload with the privileges of the web server process. …
Remediation No vendor-released patch has been identified at time of analysis; TRENDnet has not published a formal advisory. … Detailed patch versions, workarounds, and compensating controls in full report.
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Command injection in TRENDnet TEW-823DRU firmware 1.1.02b01 allows a remote, authenticated attacker to inject arbitrary

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CVE-2026-75984 vulnerability details – vuln.today
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