{"id":"CVE-2020-4839","aliases":["EUVD-2020-26086","GHSA-wm8q-g9p3-9xhm"],"status":"published","title":"IBM Host firmware for LC-class Systems is vulnerable to a stack based buffer overflow, caused by...","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.","severity":{"version":"3.0","score":4.9,"vector":"CVSS:3.0/PR:H/UI:N/AC:L/S:U/A:H/AV:N/I:N/C:N/RC:C/RL:O/E:U","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01519,"percentile":0.74758,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2021-05-25T16:00:16Z","modified":"2026-06-17T03:20:31Z","products":[{"vendor":"ibm","product":"8335-gca"},{"vendor":"ibm","product":"8335-gca_firmware"},{"vendor":"ibm","product":"8335-gta"},{"vendor":"ibm","product":"8335-gta_firmware"},{"vendor":"ibm","product":"8335-gtb"},{"vendor":"ibm","product":"8335-gtb_firmware"}],"references":[{"url":"https://www.ibm.com/support/pages/node/6454303","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/190037","tags":["vdb-entry","x_refsource_XF","x_transferred","VDB Entry","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-4839"},{"url":"https://github.com/advisories/GHSA-wm8q-g9p3-9xhm"}],"sources":{"cve":[{"id":"CVE-2020-4839","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.","status":"published","published":"2021-05-25T16:00:16.559Z","modified":"2024-09-16T20:31:49.598Z","cvss":[{"version":"3.0","score":4.9,"vector":"CVSS:3.0/PR:H/UI:N/AC:L/S:U/A:H/AV:N/I:N/C:N/RC:C/RL:O/E:U","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:35:55.797746Z"}],"euvd":[{"id":"EUVD-2020-26086","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.","status":"published","published":"2021-05-25T16:00:16Z","modified":"2024-09-16T20:31:49Z","cvss":[{"version":"3.0","score":4.9,"vector":"CVSS:3.0/PR:H/UI:N/AC:L/S:U/A:H/AV:N/I:N/C:N/RC:C/RL:O/E:U","level":"medium"}],"updated_at":"2026-11-03T00:55:13.041098Z"}],"ghsa":[{"id":"GHSA-wm8q-g9p3-9xhm","title":"IBM Host firmware for LC-class Systems is vulnerable to a stack based buffer overflow, caused by...","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.","status":"published","published":"2022-05-24T19:03:11Z","modified":"2023-01-29T05:07:44Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:46:11.123221Z"}],"nvd":[{"id":"CVE-2020-4839","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.","status":"published","published":"2021-05-25T17:15:07.99Z","modified":"2026-06-17T03:20:31.74Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"3.0","score":4.9,"vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:43.288951Z"}]}}