AUGUST 4, 2026
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Case File

CVE-2021-42659

MEDIUM · CVSS 6.5 EPSS 0.81% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-05-24 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.5. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-42659
Severity
MEDIUM
CVSS
6.5
EPSS
0.81%

Original NVD Description

There is a buffer overflow vulnerability in the Web server httpd of the router in Tenda router devices such as Tenda AC9 V1.0 V15.03.02.19(6318) and Tenda AC9 V3.0 V15.03.06.42_multi. When setting the virtual service, the httpd program will crash and exit when the super-long list parameter occurs.

Related CVEs

Other vulnerabilities affecting the same vendor(s)