Dashboard / CVE-2026-61497

CVE-2026-61497

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 45/100
Published: 2026-11-03 Modified: 2026-11-12 First seen: 2026-11-03 Status: active

Attack Surface

Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Physical
AC: Low
PR: None
UI: None
S: X
AT: None
VC: Low
VI: None
VA: High

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.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
hathach TinyUSB 0 < 0.20.1
hathach TinyUSB 0 < 0.20.1
hathach TinyUSB 0 < 0.20.1
hathach TinyUSB 0 < 0.21.0

References & Advisories (4)

Bug Bounty Relevance

45 / 100
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

5.2 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.28%
Raw Score 0.002790
Percentile 20.7%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00279
2026-11-13
0.00279
2026-11-12
0.00279
2026-11-10
0.00279
2026-11-09
0.00276
2026-11-08
0.00276
2026-11-07
0.00276
2026-11-06
0.00276
2026-11-05
0.00276
2026-11-04
0.00276

Intelligence Sources

mitre ref →
nvd ref →

External Links