CVE-2026-7607 Details
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.
A buffer overflow vulnerability has been identified in the TRENDnet TEW-821DAP access point, specifically in firmware version 1.12B01. The issue arises in the 'auto_update_firmware' function within the firmware update process. The vulnerability allows for remote exploitation by manipulating the 'str' argument, which is not properly validated before being copied into a fixed-size buffer. This oversight can lead to out-of-bounds writing, causing a buffer overflow that could be exploited to disrupt the device's normal operation.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 4, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_BO.md | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/submit/806214 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/360564 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/360564/cti | [email protected] | Permissions RequiredVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| trendnet tew-821dap firmware | 1.12b01 |
CPE
Remediation
| |
| trendnet tew-821dap | 1.0r |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 6, 2026 | Initial Analysis | [email protected] |
| May 2, 2026 | New CVE Received | [email protected] |