CVE-2020-14080
CRITICAL EXPLOITEDTRENDnet TEW-827DRU Firmware < 2.06b04 - Unauthenticated Stack-Based Buffer Overflow via Ping Test
Title source: llmExploitation Summary
CVE-2020-14080 has been observed exploited in the wild (reported by VulnCheck KEV).
Description
TRENDnet TEW-827DRU devices through 2.06B04 contain a stack-based buffer overflow in the ssi binary. The overflow allows an unauthenticated user to execute arbitrary code by POSTing to apply_sec.cgi via the action ping_test with a sufficiently long ping_ipaddr key.
References (2)
Core 2
Core References
Third Party Advisory x_refsource_misc
https://github.com/kuc001/IoTFirmware/blob/master/Trendnet/TEW-827/TRENDnet-ping_test.pdf
Third Party Advisory x_refsource_misc
https://github.com/kuc001/IoTFirmware/blob/master/Trendnet/TEW-827/ping_test_overflow.pdf
Scores
CVSS v3
9.8
EPSS
0.0376
EPSS Percentile
88.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
VulnCheck KEV
2026-03-11
CWE
CWE-787
Status
published
Products (1)
trendnet/tew-827dru_firmware
< 2.06b04
Published
Jun 15, 2020
Tracked Since
Feb 18, 2026