{"id":"CVE-2021-20491","aliases":["EUVD-2021-7909","GHSA-77mx-2f97-rf4c"],"status":"published","title":"IBM Spectrum Protect Server 7.1 and 8.1 is subject to a stack-based buffer overflow caused by...","description":"IBM Spectrum Protect Server 7.1 and 8.1 is subject to a stack-based buffer overflow caused by improper bounds checking during the parsing of commands. By issuing such a command with an improper parameter, an authorized administrator could overflow a buffer and cause the server to crash. IBM X-Force ID: 197792.","severity":{"version":"3.0","score":4.4,"vector":"CVSS:3.0/I:N/A:H/UI:N/C:N/S:U/AV:L/AC:L/PR:H/RL:O/E:U/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00286,"percentile":0.21371,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2021-04-16T15:40:15Z","modified":"2026-06-17T03:33:55Z","products":[{"vendor":"ibm","product":"spectrum protect server"},{"vendor":"ibm","product":"spectrum_protect"}],"references":[{"url":"https://www.ibm.com/support/pages/node/6442993","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/197792","tags":["vdb-entry","x_refsource_XF","x_transferred","VDB Entry","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20491"},{"url":"https://github.com/advisories/GHSA-77mx-2f97-rf4c"}],"sources":{"cve":[{"id":"CVE-2021-20491","description":"IBM Spectrum Protect Server 7.1 and 8.1 is subject to a stack-based buffer overflow caused by improper bounds checking during the parsing of commands. By issuing such a command with an improper parameter, an authorized administrator could overflow a buffer and cause the server to crash. IBM X-Force ID: 197792.","status":"published","published":"2021-04-16T15:40:15.491Z","modified":"2024-09-16T19:15:42.203Z","cvss":[{"version":"3.0","score":4.4,"vector":"CVSS:3.0/I:N/A:H/UI:N/C:N/S:U/AV:L/AC:L/PR:H/RL:O/E:U/RC:C","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-7909","description":"IBM Spectrum Protect Server 7.1 and 8.1 is subject to a stack-based buffer overflow caused by improper bounds checking during the parsing of commands. By issuing such a command with an improper parameter, an authorized administrator could overflow a buffer and cause the server to crash. IBM X-Force ID: 197792.","status":"published","published":"2021-04-16T15:40:15Z","modified":"2024-09-16T19:15:42Z","cvss":[{"version":"3.0","score":4.4,"vector":"CVSS:3.0/I:N/A:H/UI:N/C:N/S:U/AV:L/AC:L/PR:H/RL:O/E:U/RC:C","level":"medium"}],"updated_at":"2026-11-03T00:55:24.213258Z"}],"ghsa":[{"id":"GHSA-77mx-2f97-rf4c","title":"IBM Spectrum Protect Server 7.1 and 8.1 is subject to a stack-based buffer overflow caused by...","description":"IBM Spectrum Protect Server 7.1 and 8.1 is subject to a stack-based buffer overflow caused by improper bounds checking during the parsing of commands. By issuing such a command with an improper parameter, an authorized administrator could overflow a buffer and cause the server to crash. IBM X-Force ID: 197792.","status":"published","published":"2022-05-24T17:47:45Z","modified":"2023-01-29T05:06:25Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:46:01.014857Z"}],"nvd":[{"id":"CVE-2021-20491","description":"IBM Spectrum Protect Server 7.1 and 8.1 is subject to a stack-based buffer overflow caused by improper bounds checking during the parsing of commands. By issuing such a command with an improper parameter, an authorized administrator could overflow a buffer and cause the server to crash. IBM X-Force ID: 197792.","status":"published","published":"2021-04-16T16:15:12.947Z","modified":"2026-06-17T03:33:55.283Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"3.0","score":4.4,"vector":"CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:52.03307Z"}]}}