AUGUST 4, 2026
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Case File

CVE-2021-31226

CRITICAL · CVSS 9.8 EPSS 3.16%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-08-19 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. See the original NVD description below for full technical details.

CVE
CVE-2021-31226
Severity
CRITICAL
CVSS
9.8
EPSS
3.16%

Original NVD Description

An issue was discovered in HCC embedded InterNiche 4.0.1. A potential heap buffer overflow exists in the code that parses the HTTP POST request, due to lack of size validation. This vulnerability requires the attacker to send a crafted HTTP POST request with a URI longer than 50 bytes. This leads to a heap overflow in wbs_post() via an strcpy() call.

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