{"id":"CVE-2021-20515","aliases":["EUVD-2021-7933","GHSA-hvxp-j45w-m4cw"],"status":"published","title":"IBM Informix Dynamic Server 14.10 is vulnerable to a stack based buffer overflow, caused by...","description":"IBM Informix Dynamic Server 14.10 is vulnerable to a stack based buffer overflow, caused by improper bounds checking. A local privileged user could overflow a buffer and execute arbitrary code on the system or cause a denial of service condition. IBM X-Force ID: 198366.","severity":{"version":"3.0","score":6.7,"vector":"CVSS:3.0/C:H/S:U/PR:H/A:H/AV:L/UI:N/I:H/AC:L/RL:O/RC:C/E:U","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-13","score":0.00317,"percentile":0.24993,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2021-04-30T15:45:15Z","modified":"2026-06-17T03:33:57Z","products":[{"vendor":"ibm","product":"informix dynamic server"},{"vendor":"ibm","product":"informix_dynamic_server"}],"references":[{"url":"https://www.ibm.com/support/pages/node/6448568","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/198366","tags":["vdb-entry","x_refsource_XF","x_transferred","VDB Entry","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20515"},{"url":"https://github.com/advisories/GHSA-hvxp-j45w-m4cw"}],"sources":{"cve":[{"id":"CVE-2021-20515","description":"IBM Informix Dynamic Server 14.10 is vulnerable to a stack based buffer overflow, caused by improper bounds checking. A local privileged user could overflow a buffer and execute arbitrary code on the system or cause a denial of service condition. IBM X-Force ID: 198366.","status":"published","published":"2021-04-30T15:45:15.878Z","modified":"2024-09-16T18:18:52.587Z","cvss":[{"version":"3.0","score":6.7,"vector":"CVSS:3.0/C:H/S:U/PR:H/A:H/AV:L/UI:N/I:H/AC:L/RL:O/RC:C/E:U","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-7933","description":"IBM Informix Dynamic Server 14.10 is vulnerable to a stack based buffer overflow, caused by improper bounds checking. A local privileged user could overflow a buffer and execute arbitrary code on the system or cause a denial of service condition. IBM X-Force ID: 198366.","status":"published","published":"2021-04-30T15:45:15Z","modified":"2024-09-16T18:18:52Z","cvss":[{"version":"3.0","score":6.7,"vector":"CVSS:3.0/C:H/S:U/PR:H/A:H/AV:L/UI:N/I:H/AC:L/RL:O/RC:C/E:U","level":"medium"}],"updated_at":"2026-11-03T00:55:33.878386Z"}],"ghsa":[{"id":"GHSA-hvxp-j45w-m4cw","title":"IBM Informix Dynamic Server 14.10 is vulnerable to a stack based buffer overflow, caused by...","description":"IBM Informix Dynamic Server 14.10 is vulnerable to a stack based buffer overflow, caused by improper bounds checking. A local privileged user could overflow a buffer and execute arbitrary code on the system or cause a denial of service condition. IBM X-Force ID: 198366.","status":"published","published":"2022-05-24T17:49:19Z","modified":"2023-01-29T05:06:32Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:46:02.943866Z"}],"nvd":[{"id":"CVE-2021-20515","description":"IBM Informix Dynamic Server 14.10 is vulnerable to a stack based buffer overflow, caused by improper bounds checking. A local privileged user could overflow a buffer and execute arbitrary code on the system or cause a denial of service condition. IBM X-Force ID: 198366.","status":"published","published":"2021-04-30T16:15:07.587Z","modified":"2026-06-17T03:33:57.53Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary"},{"version":"3.0","score":6.7,"vector":"CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"secondary"},{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:52.81233Z"}]}}