CVE-2026-61495

HIGH
MEDIUM Priority: 0.02 BB Relevance: 49/100
Published: 2026-11-03 Modified: 2026-11-12 First seen: 2026-11-03 Status: active

Attack Surface

Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

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

Description

TinyUSB through 0.21.0, fixed in commit e85c2b8, contains an out-of-bounds write vulnerability in the MTP device class helper mtp_container_get_string() in src/class/mtp/mtp.h that allows a malicious USB host to corrupt adjacent memory by supplying a crafted MTP string with an unbounded character count. Attackers can exploit the unchecked memcpy operation copying up to 510 bytes into a fixed-size destination buffer to achieve code execution or cause a denial of service on the TinyUSB MTP device.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
hathach TinyUSB 0
hathach TinyUSB 0
hathach TinyUSB 0

Bug Bounty Relevance

49 / 100
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.0 / 10.0 v4.0
CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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

0.29%
Raw Score 0.002880
Percentile 21.6%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00288
2026-11-13
0.00288
2026-11-12
0.00288
2026-11-10
0.00288
2026-11-09
0.00266
2026-11-08
0.00266
2026-11-07
0.00266
2026-11-06
0.00266
2026-11-05
0.00266
2026-11-04
0.00266

Intelligence Sources

mitre ref →
nvd ref →