Out-of-bounds Read in Libusb
CVE-2026-23679
libusb before version 1.0.30 contains a NULL pointer dereference vulnerability that allows attackers to crash applications by supplying a malformed USB configuration descriptor where an interface claims bNumEndpoints greater than zero but…
Vulnerability class: Buffer Overflow
EPSS: 0.000 (1.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Libusb — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (release-notes, Product, Release Notes)
- disclosure@vulncheck.com (technical-description, Mitigation, Issue Tracking)
- disclosure@vulncheck.com (issue-tracking, Patch, Issue Tracking)
- disclosure@vulncheck.com (Patch, patch)
- disclosure@vulncheck.com (Patch, Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-23679?
- CVE-2026-23679 is a medium-severity vulnerability in Libusb, classified under Out-of-bounds Read. CVSS score: 6.2/10. Published 2026-05-27.
- How severe is CVE-2026-23679?
- Medium severity. CVSS v3 base score is 6.2 out of 10.