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CVE-2026-7610: Low Vulnerability in TRENDnet TEW-821DAP

A low-severity vulnerability has been discovered in TRENDnet TEW-821DAP firmware. This issue can lead to the cleartext transmission of sensitive information. Organizations should schedule remediation for affected products as they are no longer supported.

LOWCVSS 2.9 · Published May 2, 2026

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A vulnerability has been found in TRENDnet TEW-821DAP 1.12B01. This affects an unknown function of the file /www/cgi/ssi of the component Firmware Update. Such manipulation leads to cleartext transmission of sensitive information. The attack can be executed remotely. This attack is characterized by high complexity. The exploitability is reported as difficult. The exploit has been disclosed to the public 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.

Vulnerability Details

The CVE-2026-7610 vulnerability is classified as low severity with a CVSS score of 2.9. It allows for remote attacks through a network vector, but the attack complexity is high, requiring significant effort to exploit. The affected product is the TRENDnet TEW-821DAP running firmware version 1.12B01, which is no longer supported.

Technical Analysis

The root cause of this vulnerability stems from inadequate handling of sensitive information during firmware updates. Attackers may leverage this flaw to intercept data transmitted in cleartext over the network. The attack vector is network-based, with no user interaction required, and it does not necessitate any privileges.

Risk & Impact Analysis

Risk to organizations includes exposure of sensitive information due to the cleartext transmission. Although the attack requires high complexity and is difficult to exploit, the potential for data interception poses a risk to affected systems. Organizations should schedule remediation as these products are no longer supported and cannot receive patches.

Exploitation Status

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

All versions prior to vendor patch are affected, specifically TRENDnet TEW-821DAP 1.12B01. The vendor has officially announced the end of life for this product, meaning no updates or patches will be provided.

Mitigation & Remediation

Organizations should prioritize patching immediately. Given that the affected firmware is no longer supported, organizations should consider replacing affected devices with models that continue to receive updates. Additionally, organizations may implement network controls to restrict access to the vulnerable components.

Detection Guidance

Monitor network traffic for any cleartext transmission of sensitive information. Log indicators of unauthorized access attempts to the /www/cgi/ssi file and review system changes related to firmware updates on the TRENDnet TEW-821DAP.

AppSecure Threat Intelligence Insight

The long-term significance of this vulnerability lies in its cleartext transmission of sensitive data, accentuating the need for rigorous security practices in firmware updates. This vulnerability highlights the importance of maintaining up-to-date security mechanisms in networked devices. Organizations should prioritize device replacement and explore continuous security testing to mitigate risks.

For further guidance, organizations can refer to our comprehensive penetration testing services and resources.

Organizations should also explore penetration testing methodology to understand the evolving landscape of security vulnerabilities.

Additionally, the importance of utilizing a robust vulnerability management program cannot be overstated in preventing such vulnerabilities.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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