CVE-2020-14080

Name: CVE-2020-14080
Creator: NVD / NIST
Published: 2020-06-15T04:15:13.69+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.37%

Last modified Jun 17, 2026

CVE-2020-14080 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 2.37% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.37%

81.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Trendnet	Tew-827dru Firmware	<= 2.06b04

References

https://github.com/kuc001/IoTFirmware/blob/master/Trendnet/TEW-827/TRENDnet-ping_test.pdfThird Party Advisory
https://github.com/kuc001/IoTFirmware/blob/master/Trendnet/TEW-827/ping_test_overflow.pdfThird Party Advisory
https://github.com/kuc001/IoTFirmware/blob/master/Trendnet/TEW-827/TRENDnet-ping_test.pdfThird Party Advisory
https://github.com/kuc001/IoTFirmware/blob/master/Trendnet/TEW-827/ping_test_overflow.pdfThird Party Advisory

Timeline

Published: Jun 15, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-14080?

How severe is CVE-2020-14080?

CVE-2020-14080 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.37% probability of exploitation in the next 30 days.

How do I fix CVE-2020-14080?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-14080?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST