CVE-2021-31226
Published: 19 August 2021
Summary
CVE-2021-31226 is a critical-severity Out-of-bounds Write (CWE-787) vulnerability in Hcc-Embedded Interniche. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 17.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-18139
Vulnerability details
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…
more
POST request with a URI longer than 50 bytes. This leads to a heap overflow in wbs_post() via an strcpy() call.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.