CVE-2026-7611 Details
Description
A vulnerability was found in TRENDnet TEW-821DAP up to 1.12B01. This impacts the function platform_do_upgrade_cameo_dev of the file cameo_dev.sh of the component Firmware Update Handler. Performing a manipulation results in insufficient verification of data authenticity. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is said to be difficult. 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 vulnerability exists in the TRENDnet TEW-821DAP access point, specifically in firmware versions up to 1.12B01. The issue arises in the Firmware Update Handler component, within the function platform_do_upgrade_cameo_dev of the cameo_dev.sh file. This vulnerability allows for insufficient verification of data authenticity during the firmware update process. The integrity check, which relies on CRC32, can be easily bypassed. An attacker could exploit this by crafting a malicious firmware image that matches the CRC32 value of a legitimate update, thereby evading the integrity verification. Once the compromised firmware is accepted, it could be installed on the device, potentially leading to arbitrary code execution or a denial-of-service condition.
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_Inte.md | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/submit/806218 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/360568 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/360568/cti | [email protected] | Permissions RequiredVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-345 | Insufficient Verification of Data Authenticity | [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] |