CVE-2021-31227

Katalog CVE

CVSS 7.5 · High EPSS 1,7%

Kerentanan Out-of-bounds Write pada hcc-embedded nichestack. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

19 Agustus 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-787: Out-of-bounds Write

EPSS (30 hari)

1,7% peluang dieksploitasi; lebih tinggi dari 76,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/ mitigasi · advisory pihak ketiga
• https://www.kb.cert.org/vuls/id/608209 advisory pihak ketiga · pemerintah AS