CVE-2026-7607CWE-119CWE-120

TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buffer overflow

High · published May 2, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
62.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS: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
EPSS
0.01009 · 62.7th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2026-05-02T07:00Z
EPSS history
Timeline
  • 02 MAY 07:00Z
    TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buffer overflow
    cvelistv5