CVE-2020-6994

A buffer overflow vulnerability was found in some devices of Hirschmann Automation and Control HiOS and HiSecOS. The vulnerability is due to improper parsing of URL arguments. An attacker could exploit this vulnerability by specially crafting HTTP requests to overflow an internal buffer. The following devices using HiOS Version 07.0.02 and lower are affected: RSP, RSPE, RSPS, RSPL, MSP, EES, EES, EESX, GRS, OS, RED. The following devices using HiSecOS Version 03.2.00 and lower are affected: EAGLE20/30.

• CWE-12
• CWE-120

• https://www.us-cert.gov/ics/advisories/icsa-20-091-01Mitigation, Third Party Advisory, US Government Resource
• https://www.us-cert.gov/ics/advisories/icsa-20-091-01Mitigation, Third Party Advisory, US Government Resource

Published

Apr 3, 2020

Last Modified

Jun 17, 2026

Status

Modified

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