Summary
| Parameter | Value |
|---|---|
| CVE ID | CVE-2018-25236 |
| Alert Source | GitHub Advisory - Critical Vulnerability |
| CVE Publication Year | 2018 |
| Date Published | 2026-04-04 |
| Vendor | Hirschmann |
| Product | HiOS |
| CVSS Score | 9.8 (critical) |
| EPSS Score | No data |
| CISA KEV | No |
| Ransomware | Not confirmed |
Vulnerability 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.
Required Actions
Apply vendor patches or mitigations as soon as available.
Who Is Affected?
This vulnerability affects HiOS by Hirschmann. Check if your organization uses this software and requires updates.
Sources
Need help securing your systems? nFlo team offers vulnerability management and 24/7 SOC services. Contact us.
How can nFlo help?
If your organization uses products affected by this vulnerability, contact us. We can help with:
- Verifying whether your systems are at risk
- Implementing patches and risk mitigation
- Monitoring for exploitation attempts in your environment
Useful resources:
Frequently asked questions
What is the CVE-2018-25236 vulnerability?
CVE-2018-25236 is a security vulnerability discovered in Hirschmann's HiOS. The vulnerability has been assigned a CVSS score of 9.8 (critical severity). Any organization using this product should immediately verify their exposure and take appropriate remediation steps.
Who is affected by CVE-2018-25236?
This vulnerability affects users of Hirschmann's HiOS. Organizations using this solution should check whether their deployed version is vulnerable and apply available security patches or implement recommended workarounds.
How to protect against CVE-2018-25236?
Apply security patches released by Hirschmann or implement recommended workarounds. Regular vulnerability monitoring and prompt patch deployment are essential for effective protection against this type of threat.
What is the risk level of CVE-2018-25236?
The vulnerability has a CVSS score of 9.8 (critical severity). Successful exploitation could lead to compromise of organizational systems and data.
