cvedb.io
CVE-2021-31227
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2021-08-19T11:15:07.620 · Last modified 2026-06-17T03:51:28.953

Summary

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 an incorrect signed integer comparison. This vulnerability requires the attacker to send a malformed HTTP packet with a negative Content-Length, which bypasses the size checks and results in a large heap overflow in the wbs_multidata buffer copy.

Affected products

hcc-embedded — nichestack

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.