VULNERABILITY INTELLIGENCE

CVE-2021-31226

CVSS score9.8 CRITICAL

EPSS probability3.16%

CISA KEVNot currently listed

Published2021-08-19

Last modified2026-06-17

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

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.

Weakness classification

nvd@nist.gov: CWE-787

Primary references

cve@mitre.org — Mitigation, Third Party Advisory
cve@mitre.org — Third Party Advisory, US Government Resource
af854a3a-2127-422b-91ae-364da2661108 — Mitigation, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, US Government Resource