CVE-2021-31226 is a critical heap buffer overflow vulnerability affecting HCC embedded InterNiche 4.0.1. An attacker can trigger this by sending a specially crafted HTTP POST request with an overly long URI, leading to a strcpy() overflow in the wbs_post() function. This vulnerability carries a CVSS score of 9.8 (Critical), indicating it is network-exploitable with low complexity and can result in complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community attention and media coverage, including an article from BleepingComputer.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
4.0.1CPE matchmatch criteria | cpe:2.3:a:hcc-embedded:interniche:4.0.1:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.