{"id":"CVE-2026-21807","aliases":["EUVD-2026-66805","GHSA-fh44-2qvm-x6ww"],"status":"published","title":"HCL BigFix Quantum Risk Analyzer is affected by a stack-based buffer overflow","description":"HCL BigFix Quantum Risk Analyzer binary lacks several critical, industry-standard hardening protections that could allow an attacker to cause a stack-based buffer overflow.","severity":{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00123,"percentile":0.02079,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2026-08-26T22:02:27Z","modified":"2026-08-28T16:06:43Z","products":[{"vendor":"hclsoftware","product":"bigfix quantum risk analyzer"}],"references":[{"url":"https://support.hcl-software.com/csm?id=kb_article\u0026sysparm_article=KB0133289"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21807"},{"url":"https://github.com/advisories/GHSA-fh44-2qvm-x6ww"}],"sources":{"cve":[{"id":"CVE-2026-21807","title":"HCL BigFix Quantum Risk Analyzer is affected by a stack-based buffer overflow","description":"HCL BigFix Quantum Risk Analyzer binary lacks several critical, industry-standard hardening protections that could allow an attacker to cause a stack-based buffer overflow.","status":"published","published":"2026-08-26T22:02:27.455Z","modified":"2026-08-27T16:05:13.677Z","cvss":[{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L","level":"low","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T13:41:53.237769Z"}],"euvd":[{"id":"EUVD-2026-66805","description":"HCL BigFix Quantum Risk Analyzer binary lacks several critical, industry-standard hardening protections that could allow an attacker to cause a stack-based buffer overflow.","status":"published","published":"2026-08-26T22:02:27Z","modified":"2026-08-27T16:05:13Z","cvss":[{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L","level":"low"}],"updated_at":"2026-11-02T18:01:27.663452Z"}],"ghsa":[{"id":"GHSA-fh44-2qvm-x6ww","title":"HCL BigFix Quantum Risk Analyzer binary lacks several critical, industry-standard hardening...","description":"HCL BigFix Quantum Risk Analyzer binary lacks several critical, industry-standard hardening protections that could allow an attacker to cause a stack-based buffer overflow.","status":"published","published":"2026-08-27T00:30:29Z","modified":"2026-08-27T00:30:41Z","cvss":[{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L","level":"low"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:11:02.000078Z"}],"nvd":[{"id":"CVE-2026-21807","description":"HCL BigFix Quantum Risk Analyzer binary lacks several critical, industry-standard hardening protections that could allow an attacker to cause a stack-based buffer overflow.","status":"published","published":"2026-08-26T23:17:12.713Z","modified":"2026-08-28T16:06:43.297Z","cvss":[{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L","level":"low","assessor":"secondary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:12:42.035353Z"}]}}