CVE-2023-7342

high

Description

HiSecOS web server versions 03.4.00 prior to 04.1.00 contains a privilege escalation vulnerability that allows authenticated users with operator or auditor roles to escalate privileges to the administrator role by sending specially crafted packets to the web server. Attackers can exploit this flaw to gain full administrative access to the affected device.

References

https://www.vulncheck.com/advisories/belden-hisecos-web-server-privilege-escalation

https://assets.belden.com/m/4828b7cf8b652105/original/Microsoft-Word-Belden_Security_Bulletin_BSECV-2021-07_1v0-docx.pdf

Details

Source: Mitre, NVD

Published: 2026-04-02

Updated: 2026-04-03

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.8

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

Severity: High

CVSS v4

Base Score: 8.7

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Severity: High

EPSS

EPSS: 0.00006