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Vulnerability record · CVE-2024-14034 · published 2 April 2026

CVE-2024-14034: Improper authentication vulnerability

Hirschmann HiEOS devices versions prior to 01.1.00 contain an authentication bypass vulnerability in the HTTP(S) management module that allows unauthenticated remote attackers to gain administrative access by sending specially crafted HTTP(S) requests. Attackers can exploit improper authentication handling to obtain elevated privileges and perform unauthorized actions including configuration download or upload and firmware modification.

9.3 CVSS 4.0 Critical EPSS 0.46% · top 63.0% CWE-287 · Improper authentication Awaiting Analysis
9.3CVSS 4.0 base score
0.46%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
24 Jul 2026Last modified by NVD

Description

Hirschmann HiEOS devices versions prior to 01.1.00 contain an authentication bypass vulnerability in the HTTP(S) management module that allows unauthenticated remote attackers to gain administrative access by sending specially crafted HTTP(S) requests. Attackers can exploit improper authentication handling to obtain elevated privileges and perform unauthorized actions including configuration download or upload and firmware modification.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://assets.belden.com/m/7ec5c6da25ef288/original/Belden_Security_Bulletin_BSECV-2024-02_1v0.pdf
https://www.vulncheck.com/advisories/hirschmann-hieos-authentication-bypass-via-http-management-module

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Source: NIST National Vulnerability Database (record CVE-2024-14034), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.