TI-2018-15462 Aliases CVE-2018-25237 GHSA-vrr4-2wxx-29jr

Hirschmann HiSecOS Buffer Overflow via HTTPS Login

MEDIUM 50CWE-120Published 2026-04-03 · Updated 2026-10-01

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

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 denial of service or remote code execution.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00831 57th percentileScored 2026-11-07

Fix Fixed Hirschmann HiSecOS Classic Firewall (EAGLE, EAGLE One) (Belden): 05.3.03

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Belden	Hirschmann HiSecOS Classic Firewall (EAGLE, EAGLE One)	up to 05.3.02	05.3.03	Patch available	CNA

Hirschmann HiSecOS Classic Firewall (EAGLE, EAGLE One) VendorBelden Affected up to 05.3.02 Fixed in 05.3.03 Patch available CNA

Remediation

Fix · CNA Hirschmann HiSecOS Classic Firewall (EAGLE, EAGLE One) (Belden) Fixed in 05.3.03

Timeline

2026-10-02 Threatist record created from CVE-2018-25237
2026-10-03 Alias added: GHSA-vrr4-2wxx-29jr

References

Advisory 1

https://assets.belden.com/m/2d5657b3e5d721c6/original/Security-Bulletin-RADIUS-Authentication-BSECV-2018-04.pdf

TI-2019-09143 Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4). CVSS 3.1CRITICAL 9.8
TI-2019-09145 Wind River VxWorks 6.6 through 6.9 has a Buffer Overflow in the DHCP client component. CVSS 3.1HIGH 8.8
TI-2022-19123 The web server of Hirschmann BAT-C2 before 09.13.01.00R04 allows authenticated command… CVSS 3.1HIGH 8.8
TI-2019-09144 Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the IPv4 component. CVSS 3.1CRITICAL 9.8
TI-2019-09148 Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 2 of 4). CVSS 3.1CRITICAL 9.8
TI-2025-43113 A stored cross-site scripting (XSS) vulnerability exists in the web management interface… CVSS 3.1MEDIUM 6.1

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Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences