{"id":"CVE-2026-61497","published":"2026-11-03T21:17:42.723","lastModified":"2026-11-03T22:19:47.540","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.","cvssScore":5.2,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","cwes":["CWE-191"],"vendors":[],"products":[],"references":[{"url":"https://github.com/hathach/tinyusb/commit/85047e1777f5c20b7a936aa905c746125d3ed066","tags":[]},{"url":"https://github.com/hathach/tinyusb/releases/tag/0.21.0","tags":[]},{"url":"https://www.vulncheck.com/advisories/tinyusb-integer-underflow-via-hid-report-descriptor-parser","tags":[]}],"exploitRefs":[{"url":"https://github.com/hathach/tinyusb/commit/85047e1777f5c20b7a936aa905c746125d3ed066","tags":[]},{"url":"https://github.com/hathach/tinyusb/releases/tag/0.21.0","tags":[]}],"hasPoc":true,"ai":null}