{"id":"CVE-2021-3700","aliases":["ALPINE-CVE-2021-3700","AZL-8824","BELL-CVE-2021-3700","DEBIAN-CVE-2021-3700","DLA-2958-1","EUVD-2021-26985","GHSA-9885-wxqj-48q7","MGASA-2022-0133","OESA-2021-1355","UBUNTU-CVE-2021-3700","USN-5784-1","openSUSE-SU-2024:11489-1"],"status":"published","title":"A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the...","description":"A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.","severity":{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00314,"percentile":0.24602,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-416"],"published":"2021-09-30T11:04:37Z","modified":"2026-11-03T06:32:39Z","fixes":[{"ecosystem":"Alpine:v3.16","package":"usbredir","fixed_in":["0.12.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"usbredir","fixed_in":["0.12.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"usbredir","fixed_in":["0.12.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"usbredir","fixed_in":["0.12.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"usbredir","fixed_in":["0.12.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"usbredir","fixed_in":["0.12.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"usbredir","fixed_in":["0.12.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"usbredir","fixed_in":["0.12.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"usbredir","fixed_in":["0.12.0-r0"],"sources":["osv"]},{"ecosystem":"Azure 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Tracking","Patch","Third Party Advisory","fix"]},{"url":"https://gitlab.freedesktop.org/spice/usbredir/-/commit/03c519ff5831ba","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/03/msg00030.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3700","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-9885-wxqj-48q7"},{"url":"https://security.alpinelinux.org/vuln/CVE-2021-3700","tags":["advisory"]},{"url":"https://docs.bell-sw.com/security/cves/CVE-2021-3700","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-3700","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2022-0133.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=30194","tags":["report"]},{"url":"https://www.debian.org/lts/security/2022/dla-2958","tags":["web"]},{"url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1355","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-3700","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2021-3700","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5784-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-3700","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2021-3700","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2021-3700","description":"A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.","status":"published","published":"2022-02-24T18:50:17Z","modified":"2024-08-03T17:01:08.432Z","cwes":["CWE-416"],"updated_at":"2026-11-02T14:33:03.671751Z"}],"euvd":[{"id":"EUVD-2021-26985","description":"A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.","status":"published","published":"2022-02-24T18:50:17Z","modified":"2024-08-03T17:01:08Z","updated_at":"2026-11-03T03:25:11.953192Z"}],"ghsa":[{"id":"GHSA-9885-wxqj-48q7","title":"A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the...","description":"A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.","status":"published","published":"2022-02-25T00:00:59Z","modified":"2023-02-03T05:06:15Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:53:52.260774Z"}],"nvd":[{"id":"CVE-2021-3700","description":"A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.","status":"published","published":"2022-02-24T19:15:09.26Z","modified":"2026-06-17T04:05:35.12Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.4,"vector":"AV:L/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:07:04.6896Z"}],"osv":[{"id":"ALPINE-CVE-2021-3700","description":"A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.","status":"published","published":"2022-02-24T19:15:09.26Z","modified":"2026-11-03T06:32:39.849064105Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-03T07:17:02.90744Z"},{"id":"AZL-8824","title":"CVE-2021-3700 affecting package usbredir for versions less than 0.12.0-1","description":"A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.","status":"published","published":"2022-02-24T19:15:09Z","modified":"2026-04-21T04:34:55.168241Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T15:28:11.069402Z"},{"id":"BELL-CVE-2021-3700","title":"CVE-2021-3700 does not affect BellSoft software","status":"withdrawn","published":"2023-08-31T12:14:32.288081Z","modified":"2026-01-26T09:47:53.676601Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T15:28:16.5265Z"},{"id":"CVE-2021-3700","description":"A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.","status":"published","published":"2022-02-24T19:15:09.26Z","modified":"2026-10-20T10:54:50.181965594Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:20.434873Z"},{"id":"DEBIAN-CVE-2021-3700","description":"A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.","status":"published","published":"2022-02-24T19:15:09.26Z","modified":"2026-10-23T18:03:51.030892289Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:35.233346Z"},{"id":"OESA-2021-1355","title":"usbredir security update","description":"usbredir is the name of a network protocol for sending USB device traffic over a network connection. It is also the name of the software package offering a parsing library, a usbredirhost library and several utilities implementing this protocol. It also including a USB host TCP server, using libusbredirhost.\r\n\r\nSecurity Fix(es):\r\n\r\nNo description is available for this CVE.(CVE-2021-3700)","status":"published","published":"2021-09-30T11:04:37Z","modified":"2026-08-18T01:15:58.506426357Z","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":"2026-11-02T15:52:38.987987Z"},{"id":"UBUNTU-CVE-2021-3700","description":"A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.","status":"published","published":"2022-02-24T19:15:00Z","modified":"2026-04-22T12:57:57.117583Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:27.870979Z"},{"id":"DLA-2958-1","title":"usbredir - security update","status":"published","published":"2022-03-21T00:00:00Z","modified":"2026-03-09T01:18:51.753057Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"MGASA-2022-0133","title":"Updated usbredir packages fix security vulnerability","description":"A use-after-free vulnerability was found in usbredir in versions prior to\n0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c.\nThis issue occurs when serializing large amounts of buffered write data in\nthe case of a slow or blocked destination. (CVE-2021-3700)\n","status":"published","published":"2022-04-09T21:20:39Z","modified":"2026-04-16T04:43:56.920206911Z","updated_at":"2026-11-02T15:49:41.849028Z"},{"id":"openSUSE-SU-2024:11489-1","title":"libusbredirhost1-0.11.0-1.2 on GA media","description":"These are all security issues fixed in the libusbredirhost1-0.11.0-1.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2025-05-07T18:13:04.916283Z","updated_at":"2026-11-02T16:58:35.195147Z"},{"id":"USN-5784-1","title":"usbredir vulnerability","description":"It was discovered that usbredir incorrectly handled memory when\nserializing large amounts of data in the case of a slow or blocked\ndestination. An attacker could possibly use this issue to cause\napplications using usbredir to crash, resulting in a denial of\nservice, or possibly execute arbitrary code.\n","status":"published","published":"2023-01-03T11:49:09Z","modified":"2026-06-29T13:50:44.521055117Z","updated_at":"2026-11-02T16:58:16.20937Z"}]}}