{"id":"CVE-2026-61497","aliases":["DEBIAN-CVE-2026-61497","EUVD-2026-116215","GHSA-qf63-w79j-qw7p","UBUNTU-CVE-2026-61497"],"status":"published","title":"TinyUSB \u003c 0.21.0 Integer Underflow via HID Report Descriptor Parser","description":"TinyUSB before 0.21.0 contains an integer underflow vulnerability in the HID host report descriptor parser tuh_hid_parse_report_descriptor() in src/class/hid/hid_host.c that allows a malicious USB device to trigger an out-of-bounds read by subtracting an item size from the remaining descriptor length without validating the item fits within the remaining buffer. Attackers can present a crafted USB device with a truncated report descriptor causing the uint16_t desc_len value to underflow, resulting in out-of-bounds memory reads and denial of service on the host system.","severity":{"version":"4.0","score":5.2,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00276,"percentile":0.20201,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-191"],"published":"2026-11-03T20:21:53Z","modified":"2026-11-09T21:59:12Z","affected":[{"source":"osv","ecosystem":"Debian:13","package":"tinyusb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.18.0+dfsg-1"]},{"source":"osv","ecosystem":"Debian:14","package":"tinyusb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.18.0+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"tinyusb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.18.0+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"tinyusb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.18.0+dfsg-1"]}],"products":[{"vendor":"hathach","product":"tinyusb"}],"references":[{"url":"https://github.com/hathach/tinyusb/releases/tag/0.21.0","tags":["patch","release-notes","fix","report"]},{"url":"https://github.com/hathach/tinyusb/commit/85047e1777f5c20b7a936aa905c746125d3ed066","tags":["issue-tracking","patch","fix","report"]},{"url":"https://www.vulncheck.com/advisories/tinyusb-integer-underflow-via-hid-report-descriptor-parser","tags":["third-party-advisory","advisory","report"]},{"url":"https://gist.github.com/Shukhrat-03/8fe6e5881614a7f86b5d2b87d44ea706","tags":["technical-description","exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-61497","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-qf63-w79j-qw7p"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61497.json","tags":["advisory"]},{"url":"https://github.com/hathach/tinyusb","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-61497","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-61497","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-61497","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-61497","title":"TinyUSB \u003c 0.21.0 Integer Underflow via HID Report Descriptor Parser","description":"TinyUSB before 0.21.0 contains an integer underflow vulnerability in the HID host report descriptor parser tuh_hid_parse_report_descriptor() in src/class/hid/hid_host.c that allows a malicious USB device to trigger an out-of-bounds read by subtracting an item size from the remaining descriptor length without validating the item fits within the remaining buffer. Attackers can present a crafted USB device with a truncated report descriptor causing the uint16_t desc_len value to underflow, resulting in out-of-bounds memory reads and denial of service on the host system.","status":"published","published":"2026-11-03T20:21:53.64Z","modified":"2026-11-09T21:59:12.227Z","cvss":[{"version":"4.0","score":5.2,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":5.2,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-191"],"updated_at":"2026-11-09T22:35:08.962494Z"}],"euvd":[{"id":"EUVD-2026-116215","description":"TinyUSB before 0.21.0 contains an integer underflow vulnerability in the HID host report descriptor parser tuh_hid_parse_report_descriptor() in src/class/hid/hid_host.c that allows a malicious USB device to trigger an out-of-bounds read by subtracting an item size from the remaining descriptor length without validating the item fits within the remaining buffer. Attackers can present a crafted USB device with a truncated report descriptor causing the uint16_t desc_len value to underflow, resulting in out-of-bounds memory reads and denial of service on the host system.","status":"published","published":"2026-11-03T20:21:53Z","modified":"2026-11-09T21:59:12Z","cvss":[{"version":"4.0","score":5.2,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-09T23:18:32.235826Z"}],"ghsa":[{"id":"GHSA-qf63-w79j-qw7p","title":"TinyUSB before 0.20.1 contains an integer underflow vulnerability in the HID host report...","description":"TinyUSB before 0.20.1 contains an integer underflow vulnerability in the HID host report descriptor parser tuh_hid_parse_report_descriptor() in src/class/hid/hid_host.c that allows a malicious USB device to trigger an out-of-bounds read by subtracting an item size from the remaining descriptor length without validating the item fits within the remaining buffer. Attackers can present a crafted USB device with a truncated report descriptor causing the uint16_t desc_len value to underflow, resulting in out-of-bounds memory reads and denial of service on the host system.","status":"published","published":"2026-11-03T21:32:30Z","modified":"2026-11-10T00:32:30Z","cvss":[{"version":"4.0","score":5.2,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":5.2,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","level":"medium"}],"cwes":["CWE-191"],"updated_at":"2026-11-10T00:50:52.87263Z"}],"nvd":[{"id":"CVE-2026-61497","description":"TinyUSB before 0.21.0 contains an integer underflow vulnerability in the HID host report descriptor parser tuh_hid_parse_report_descriptor() in src/class/hid/hid_host.c that allows a malicious USB device to trigger an out-of-bounds read by subtracting an item size from the remaining descriptor length without validating the item fits within the remaining buffer. Attackers can present a crafted USB device with a truncated report descriptor causing the uint16_t desc_len value to underflow, resulting in out-of-bounds memory reads and denial of service on the host system.","status":"published","published":"2026-11-03T21:17:42.723Z","modified":"2026-11-09T22:18:52.84Z","cvss":[{"version":"4.0","score":5.2,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.2,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-191"],"updated_at":"2026-11-09T23:16:04.636079Z"}],"osv":[{"id":"CVE-2026-61497","title":"TinyUSB \u003c 0.20.1 Integer Underflow via HID Report Descriptor Parser","description":"TinyUSB before 0.20.1 contains an integer underflow vulnerability in the HID host report descriptor parser tuh_hid_parse_report_descriptor() in src/class/hid/hid_host.c that allows a malicious USB device to trigger an out-of-bounds read by subtracting an item size from the remaining descriptor length without validating the item fits within the remaining buffer. Attackers can present a crafted USB device with a truncated report descriptor causing the uint16_t desc_len value to underflow, resulting in out-of-bounds memory reads and denial of service on the host system.","status":"published","published":"2026-11-03T20:21:53.64Z","modified":"2026-11-09T07:03:25.142509111Z","cvss":[{"version":"4.0","score":5.2,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-191"],"updated_at":"2026-11-09T03:16:17.543303Z"},{"id":"DEBIAN-CVE-2026-61497","description":"TinyUSB before 0.21.0 contains an integer underflow vulnerability in the HID host report descriptor parser tuh_hid_parse_report_descriptor() in src/class/hid/hid_host.c that allows a malicious USB device to trigger an out-of-bounds read by subtracting an item size from the remaining descriptor length without validating the item fits within the remaining buffer. Attackers can present a crafted USB device with a truncated report descriptor causing the uint16_t desc_len value to underflow, resulting in out-of-bounds memory reads and denial of service on the host system.","status":"published","published":"2026-11-03T21:17:42.723Z","modified":"2026-11-10T05:00:07.874457289Z","cvss":[{"version":"4.0","score":5.2,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"updated_at":"2026-11-10T05:22:46.487299Z"},{"id":"UBUNTU-CVE-2026-61497","description":"TinyUSB before 0.20.1 contains an integer underflow vulnerability in the HID host report descriptor parser tuh_hid_parse_report_descriptor() in src/class/hid/hid_host.c that allows a malicious USB device to trigger an out-of-bounds read by subtracting an item size from the remaining descriptor length without validating the item fits within the remaining buffer. Attackers can present a crafted USB device with a truncated report descriptor causing the uint16_t desc_len value to underflow, resulting in out-of-bounds memory reads and denial of service on the host system.","status":"published","published":"2026-11-03T21:17:00Z","modified":"2026-11-05T11:46:35.833060835Z","cvss":[{"version":"3.1","score":5.2,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","level":"medium"},{"version":"4.0","score":5.2,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-05T13:30:15.321876Z"}]}}