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CVE-2018-25236

Hirschmann HiOS HiSecOS Authentication Bypass via HTTP Management

Published: Apr 3, 2026Updated: Apr 7, 2026 Sources: CVE List NVDCWE-287
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
0.5%
Top 61.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

Hirschmann HiOS and HiSecOS products RSP, RSPE, RSPS, RSPL, MSP, EES, EESX, GRS, OS, RED, EAGLE contain an authentication bypass vulnerability in the HTTP(S) management module that allows unauthenticated remote attackers to gain administrative access by crafting specially formed HTTP requests. Attackers can exploit improper authentication handling to obtain the authentication status and privileges of a previously authenticated user without providing valid credentials.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-287

Affected Products

Hirschmann HiOSBeldenNetworking Infrastructure
Hirschmann HiSecOS EAGLEBeldenNetworking Infrastructure
beldencommercialUSNetworking Infrastructureaka belden hirschmann, tofino security appliance

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://assets.belden.com/m/52ecadbb5f1b0e04/original/Security-Bulletin-Web-Server-Authentication-Bypass-HiOS-HiSecOS-Hirschmann-BSECV-2018-05.pdf
assets.belden.com
https://www.vulncheck.com/advisories/hirschmann-hios-hisecos-authentication-bypass-via-http-management
vulncheck.com

Timeline

Published
Apr 3, 2026
Last Updated
Apr 7, 2026

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