Is there a public PoC exploit available for CVE-2026-7609?

Yes, a public proof-of-concept exploit is available for CVE-2026-7609. Prioritise patching immediately. EPSS: 0.8%.

TRENDnet TEW-821DAP CVE-2026-7609

Q: What is the CVSS score of CVE-2026-7609?

CVE-2026-7609 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS: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/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. EPSS exploitation probability: 0.8%.

EUVD-2026-26773 LOW

OS Command Injection (CWE-78)

2026-05-02 VulDB

Command Injection Tew 821Dap Trendnet

2.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.1 LOW

CVSS: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/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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

May 02, 2026 - 10:22 NVD

MEDIUM LOW

CVSS changed

May 02, 2026 - 10:22 NVD

6.3 (MEDIUM) 2.1 (LOW)

PoC Detected

May 02, 2026 - 10:16 vuln.today

Public exploit code

Analysis Generated

May 02, 2026 - 10:00 vuln.today

EUVD ID Assigned

May 02, 2026 - 09:30 euvd

EUVD-2026-26773

Analysis Generated

May 02, 2026 - 09:30 vuln.today

CVE Published

May 02, 2026 - 09:00 nvd

LOW 2.1

DescriptionCVE.org

A flaw has been found in TRENDnet TEW-821DAP up to 1.12B01. The impacted element is the function tools_diagnostic of the file /tmp/diagnostic of the component Firmware Udpate. This manipulation causes os command injection. Remote exploitation of the attack is possible. The exploit has been published and may be used. The vendor explains: "That firmware version will only work on our hardware version v1.xR. We have already EOL that product 8 years ago and are no longer selling". This vulnerability only affects products that are no longer supported by the maintainer.

AnalysisAI

OS command injection in TRENDnet TEW-821DAP firmware up to version 1.12B01 allows authenticated remote attackers to execute arbitrary commands via the tools_diagnostic function in the firmware update component. The vulnerability affects only end-of-life hardware (version v1.xR) discontinued 8 years ago, significantly limiting practical exposure despite publicly available exploit code.

Technical ContextAI

The vulnerability exists in the firmware update component of the TEW-821DAP wireless device, specifically in the tools_diagnostic function within the /tmp/diagnostic file. CWE-78 (Improper Neutralization of Special Elements used in an OS Command) indicates the firmware fails to properly sanitize user input before passing it to OS command execution routines. The device accepts unauthenticated network connections but requires login credentials (PR:L per CVSS vector) to reach the vulnerable endpoint, suggesting the function is accessible after user authentication.

RemediationAI

No vendor-released security patch is available, as the product reached end-of-life status years before this vulnerability was disclosed. Organizations operating TEW-821DAP v1.xR hardware should immediately retire and replace the device with a current, vendor-supported wireless access point model. If immediate replacement is not feasible due to operational constraints, implement compensating controls: restrict network access to the device's web management interface via network segmentation or firewall rules blocking TCP/UDP ports used for firmware updates and management functions, require VPN or IP-based access control lists limiting connections to trusted administrative networks only, and disable or restrict the firmware update functionality if the device configuration allows disabling specific features. Monitor device logs for authentication attempts and command injection patterns. Document the device's EOL status in your asset inventory and create a retirement timeline to eliminate the risk entirely.