{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"hathach/tinyusb","product":"TinyUSB","source":"CNA: VulnCheck","vendor":"hathach","versions":[{"lessThan":"0.21.0","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-61497","cwes":["CWE-191"],"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.","epss":{"date":"2026-11-09","percentile":0.20201,"score":0.00276},"exploits":[{"kind":"exploit","source":"CNA: VulnCheck","url":"https://gist.github.com/Shukhrat-03/8fe6e5881614a7f86b5d2b87d44ea706"}],"kev":null,"metrics":[{"score":5.2,"severity":"medium","source":"CNA: VulnCheck","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","version":"4.0"},{"score":5.2,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","version":"3.1"},{"score":5.2,"severity":"medium","source":"NVD: disclosure@vulncheck.com","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","version":"4.0"},{"score":5.2,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","version":"3.1"}],"modifiedAt":1794261552227,"publishedAt":1793737313640,"references":[{"source":"CNA: VulnCheck","tags":["patch","release-notes"],"url":"https://github.com/hathach/tinyusb/releases/tag/0.21.0"},{"source":"CNA: VulnCheck","tags":["issue-tracking","patch"],"url":"https://github.com/hathach/tinyusb/commit/85047e1777f5c20b7a936aa905c746125d3ed066"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/tinyusb-integer-underflow-via-hid-report-descriptor-parser"},{"source":"CNA: VulnCheck","tags":["technical-description","exploit"],"url":"https://gist.github.com/Shukhrat-03/8fe6e5881614a7f86b5d2b87d44ea706"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/hathach/tinyusb/commit/85047e1777f5c20b7a936aa905c746125d3ed066"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/hathach/tinyusb/releases/tag/0.21.0"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/tinyusb-integer-underflow-via-hid-report-descriptor-parser"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/hathach/tinyusb/releases/tag/0.21.0"},{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/hathach/tinyusb/commit/85047e1777f5c20b7a936aa905c746125d3ed066"}],"revision":"96d599f1e15a7cc5a30bcaad6f753fd69d0eb2906ac11df1162c8edc957b0e65","sources":[{"modifiedAt":1794261552227,"name":"CNA: VulnCheck","retrievedAt":1794262247541,"url":"https://www.cve.org/CVERecord?id=CVE-2026-61497"},{"modifiedAt":1793744387540,"name":"NVD","retrievedAt":1793751771050,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-61497"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794262271475,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-61497"}],"ssvc":{"assessedAt":1793741280459,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"TinyUSB < 0.21.0 Integer Underflow via HID Report Descriptor Parser","updatedAt":1794262271475}