What’s Vulnerable › Vulnerabilities

CVE-2026-7607: TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buffer overflow

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-05-02 · updated 2026-10-26
• Weakness: CWE-119

Description

A security vulnerability has been detected in TRENDnet TEW-821DAP 1.12B01. Impacted is the function auto_update_firmware of the component Firmware Udpate. The manipulation of the argument str leads to buffer overflow. The attack may be initiated remotely. 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.

Affected products

• TRENDnet TEW-821DAP: 1.12b01

References

• https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_BO.md
• https://vuldb.com/submit/806214
• https://vuldb.com/vuln/360564
• https://vuldb.com/vuln/360564/cti

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