What’s Vulnerable › Vulnerabilities

CVE-2020-4839

• Severity: medium (CVSS 4.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-25 · updated 2026-06-17
• Weakness: CWE-787

Description

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: op820
• IBM 8335-Gta Firmware: op820
• IBM 8335-Gtb Firmware: op820

References

• https://exchange.xforce.ibmcloud.com/vulnerabilities/190037
• https://www.ibm.com/support/pages/node/6454303
• https://exchange.xforce.ibmcloud.com/vulnerabilities/190037
• https://www.ibm.com/support/pages/node/6454303

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