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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.

PUBLISHED Reserved 2026-05-01 | Published 2026-05-02 | Updated 2026-05-04 | Assigner VulDB




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X
HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R
HIGH: 8.8CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R
9.0AV:N/AC:L/Au:S/C:C/I:C/A:C/E:ND/RL:ND/RC:UR

Problem types

Buffer Overflow

Memory Corruption

Product status

1.12B01
affected

Timeline

2026-05-01:Advisory disclosed
2026-05-01:VulDB entry created
2026-05-01:VulDB entry last update

Credits

IOT_Res (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/360564 (VDB-360564 | TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buffer overflow) vdb-entry technical-description

vuldb.com/vuln/360564/cti (VDB-360564 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/submit/806214 (Submit #806214 | Trendnet TEW-821DAP v1.12B01 CWE-120 Buffer Copy without Checking Size of Input) third-party-advisory

github.com/...are_Update/blob/main/Trendnet/TEW-821DAP_BO.md patch

cve.org (CVE-2026-7607)

nvd.nist.gov (CVE-2026-7607)

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