{"id":"CVE-2021-41500","aliases":["DEBIAN-CVE-2021-41500","EUVD-2021-0049","GHSA-8rh6-h94m-vj54","PYSEC-2021-870","UBUNTU-CVE-2021-41500"],"status":"published","title":"Incorrect Comparison in cvxopt","description":"Incomplete string comparison vulnerability exits in cvxopt.org cvxop \u003c= 1.2.6 in APIs (cvxopt.cholmod.diag, cvxopt.cholmod.getfactor, cvxopt.cholmod.solve, cvxopt.cholmod.spsolve), which allows attackers to conduct Denial of Service attacks by construct fake Capsule objects.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01189,"percentile":0.68375,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-697"],"published":"2021-12-17T20:44:24Z","modified":"2026-10-23T18:03:51Z","fixes":[{"ecosystem":"PyPI","package":"cvxopt","fixed_in":["1.2.7"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"cvxopt","fixed_in":["1.2.7+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"cvxopt","fixed_in":["1.2.7+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"cvxopt","fixed_in":["1.2.7+dfsg-1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"cvxopt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.7"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"cvxopt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.7+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"cvxopt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.7+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"cvxopt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.7+dfsg-1"}]}]},{"source":"osv","ecosystem":"PyPI","package":"cvxopt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.7"}]}],"versions":["1.1.6","1.1.7","1.1.8","1.1.9","1.2.0","1.2.1","1.2.2","1.2.3","1.2.4","1.2.5","1.2.5.post1","1.2.6"]},{"source":"osv","ecosystem":"PyPI","package":"cvxopt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.7"}]}],"versions":["1.1.6","1.1.7","1.1.8","1.1.9","1.2.0","1.2.1","1.2.2","1.2.3","1.2.4","1.2.5","1.2.5.post1","1.2.6"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"cvxopt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.4-1","1.1.4-1.1","1.1.4-1.2"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"cvxopt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.4-1.3","1.1.4-1.3build1","1.1.4-1.3build2","1.1.4-1.4"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"cvxopt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.9+dfsg-2","1.1.9+dfsg-2build1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"cvxopt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.9+dfsg-3build2","1.2.3+dfsg-1ubuntu1","1.2.3+dfsg-2","1.2.3+dfsg-2build1"]}],"products":[{"vendor":"cvxopt_project","product":"cvxopt"},{"vendor":"fedoraproject","product":"fedora"}],"references":[{"url":"https://github.com/cvxopt/cvxopt/issues/193","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix","web","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CXTPM3DGVYTYQ54OFCMXZVWVOMR7JM2D/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41500","tags":["advisory"]},{"url":"https://github.com/cvxopt/cvxopt/commit/d5a21cf1da62e4269176384b1ff62edac5579f94","tags":["web"]},{"url":"https://github.com/advisories/GHSA-8rh6-h94m-vj54","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/cvxopt/PYSEC-2021-870.yaml","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CXTPM3DGVYTYQ54OFCMXZVWVOMR7JM2D","tags":["web"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-41500","tags":["advisory"]},{"url":"https://github.com/cvxopt/cvxopt","tags":["package"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CXTPM3DGVYTYQ54OFCMXZVWVOMR7JM2D/","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2021-41500","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-41500","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-41500","description":"Incomplete string comparison vulnerability exits in cvxopt.org cvxop \u003c= 1.2.6 in APIs (cvxopt.cholmod.diag, cvxopt.cholmod.getfactor, cvxopt.cholmod.solve, cvxopt.cholmod.spsolve), which allows attackers to conduct Denial of Service attacks by construct fake Capsule objects.","status":"published","published":"2021-12-17T20:44:24Z","modified":"2024-08-04T03:15:28.325Z","updated_at":"2026-11-02T14:32:59.105382Z"}],"euvd":[{"id":"EUVD-2021-0049","description":"Incomplete string comparison vulnerability exits in cvxopt.org cvxop \u003c= 1.2.6 in APIs (cvxopt.cholmod.diag, cvxopt.cholmod.getfactor, cvxopt.cholmod.solve, cvxopt.cholmod.spsolve), which allows attackers to conduct Denial of Service attacks by construct fake Capsule objects.","status":"published","published":"2021-12-17T20:44:24Z","modified":"2024-08-04T03:15:28Z","updated_at":"2026-11-03T03:24:17.663217Z"}],"ghsa":[{"id":"GHSA-8rh6-h94m-vj54","title":"Incorrect Comparison in cvxopt","description":"Incomplete string comparison vulnerability exits in cvxopt.org cvxop \u003c= 1.2.6 in APIs (cvxopt.cholmod.diag, cvxopt.cholmod.getfactor, cvxopt.cholmod.solve, cvxopt.cholmod.spsolve), which allows attackers to conduct Denial of Service attacks by construct fake Capsule objects.","status":"published","published":"2022-01-07T00:01:11Z","modified":"2024-09-13T20:07:13Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-697"],"updated_at":"2026-11-02T14:38:02.773864Z"}],"nvd":[{"id":"CVE-2021-41500","description":"Incomplete string comparison vulnerability exits in cvxopt.org cvxop \u003c= 1.2.6 in APIs (cvxopt.cholmod.diag, cvxopt.cholmod.getfactor, cvxopt.cholmod.solve, cvxopt.cholmod.spsolve), which allows attackers to conduct Denial of Service attacks by construct fake Capsule objects.","status":"published","published":"2021-12-17T21:15:07.777Z","modified":"2026-06-17T04:08:34.487Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-697"],"updated_at":"2026-11-02T14:07:02.566991Z"}],"osv":[{"id":"CVE-2021-41500","description":"Incomplete string comparison vulnerability exits in cvxopt.org cvxop \u003c= 1.2.6 in APIs (cvxopt.cholmod.diag, cvxopt.cholmod.getfactor, cvxopt.cholmod.solve, cvxopt.cholmod.spsolve), which allows attackers to conduct Denial of Service attacks by construct fake Capsule objects.","status":"published","published":"2021-12-17T21:15:07.777Z","modified":"2026-10-20T10:54:59.027122393Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:21.557945Z"},{"id":"DEBIAN-CVE-2021-41500","description":"Incomplete string comparison vulnerability exits in cvxopt.org cvxop \u003c= 1.2.6 in APIs (cvxopt.cholmod.diag, cvxopt.cholmod.getfactor, cvxopt.cholmod.solve, cvxopt.cholmod.spsolve), which allows attackers to conduct Denial of Service attacks by construct fake Capsule objects.","status":"published","published":"2021-12-17T21:15:07.777Z","modified":"2026-10-23T18:03:51.281396533Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:35.521549Z"},{"id":"GHSA-8rh6-h94m-vj54","title":"Incorrect Comparison in cvxopt","description":"Incomplete string comparison vulnerability exits in cvxopt.org cvxop \u003c= 1.2.6 in APIs (cvxopt.cholmod.diag, cvxopt.cholmod.getfactor, cvxopt.cholmod.solve, cvxopt.cholmod.spsolve), which allows attackers to conduct Denial of Service attacks by construct fake Capsule objects.","status":"published","published":"2022-01-07T00:01:11Z","modified":"2024-09-13T20:23:27.69705Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-697"],"updated_at":"2026-11-02T15:46:42.78452Z"},{"id":"UBUNTU-CVE-2021-41500","description":"Incomplete string comparison vulnerability exits in cvxopt.org cvxop \u003c= 1.2.6 in APIs (cvxopt.cholmod.diag, cvxopt.cholmod.getfactor, cvxopt.cholmod.solve, cvxopt.cholmod.spsolve), which allows attackers to conduct Denial of Service attacks by construct fake Capsule objects.","status":"published","published":"2021-12-17T21:15:00Z","modified":"2025-10-24T04:50:35Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:29.220315Z"},{"id":"PYSEC-2021-870","description":"Incomplete string comparison vulnerability exits in cvxopt.org cvxop \u003c= 1.2.6 in APIs (cvxopt.cholmod.diag, cvxopt.cholmod.getfactor, cvxopt.cholmod.solve, cvxopt.cholmod.spsolve), which allows attackers to conduct Denial of Service attacks by construct fake Capsule objects.","status":"published","published":"2021-12-17T21:15:00Z","modified":"2023-11-08T04:06:59.404685Z","updated_at":"2026-11-02T15:52:53.449407Z"}]}}