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NVD CRITICAL: CVE-2018-25237 — Hirschmann HiSecOS devices versions prior to 05.3.03 contain a buffer overflow v...

Friday, April 3, 2026 at 10:16 PM UTC·Source: NIST NVD

Updated: Monday, April 6, 2026 at 12:17 AM UTC

Executive Summary

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

Analysis

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. CVSS Score: 9.8. Published: 2026-04-03T22:16:24.740.

Indicators of Compromise (1)

CVE (1)
CVE-2018-25237
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Apr 3, 2026. Verified by: NIST.

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