CVE-2020-4839: IBM 8335-Gca Firmware

Medium severity, CVSS 4.9. EPSS: 1.5% chance of exploitation in the next 30 days.

IBM Host firmware for LC-class Systems is vulnerable to a stack based buffer overflow, caused by improper bounds checking. A remote privileged attacker could exploit this vulnerability and cause a denial of service. IBM X-Force ID: 190037.

Affected products

• IBM 8335-Gca Firmware: version op820 only
• IBM 8335-Gta Firmware: version op820 only
• IBM 8335-Gtb Firmware: version op820 only

Published 2021-05-25. Last modified 2026-06-17.