CVE-2018-25237
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductHirschmann HiSecOS Classic Firewall (EAGLE, EAGLE One)
PublishedApr 3, 2026
First seenApr 3, 2026
Weakness typeCWE-120CWE-120
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Belden Hirschmann HiSecOS Classic Firewall (EAGLE, EAGLE One) | v ≤ 05.3.02 | — |
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