CVE-2018-25237
Received Received - Intake
Buffer Overflow in Hirschmann HiSecOS HTTPS Login Enables RCE

Publication date: 2026-04-03

Last updated on: 2026-04-03

Assigner: VulnCheck

Description
Hirschmann HiSecOS devices versions prior to 05.3.03 contain a buffer overflow vulnerability in the HTTPS login interface when RADIUS authentication is enabled that allows remote attackers to crash the device or execute arbitrary code by submitting a password longer than 128 characters. Attackers can exploit improper bounds checking in password handling to overflow a fixed-size buffer and achieve denial of service or remote code execution.
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Meta Information
Published
2026-04-03
Last Modified
2026-04-03
Generated
2026-06-16
AI Q&A
2026-04-04
EPSS Evaluated
2026-06-14
NVD
CVE-2018-25237
EUVD
EUVD-2018-21728
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
hirschmann hisecos to 05.3.03 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-120 The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
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Executive Summary

This vulnerability exists in Hirschmann HiSecOS devices versions prior to 05.3.03. It is a buffer overflow issue in the HTTPS login interface that occurs when RADIUS authentication is enabled. Specifically, if an attacker submits a password longer than 128 characters, the device improperly checks the bounds of the password input, causing a fixed-size buffer to overflow.

This buffer overflow can be exploited by remote attackers to either crash the device or execute arbitrary code on it.

Impact Analysis

Exploitation of this vulnerability can lead to serious impacts including denial of service, where the device crashes and becomes unavailable.

More critically, attackers may execute arbitrary code remotely, potentially gaining control over the affected device.

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