NULL pointer dereference in Libuvc
CVE-2026-1991
A vulnerability was detected in libuvc up to 0.0.7. Affected is the function uvc_scan_streaming of the file src/device.c of the component UVC Descriptor Handler. The manipulation results in null pointer dereference. The attack needs to be approached locally. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (7.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Libuvc
- Libuvc — versions 0.0.1, 0.0.2, 0.0.3
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (Exploit, VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/libuvc/libuvc/issues/300 (issue-tracking, Exploit, Vendor Advisory)
- github.com/oneafter/0104/blob/main/repro (Product, exploit)
- github.com/libuvc/libuvc/ (Product, product)
Frequently asked questions
- What is CVE-2026-1991?
- CVE-2026-1991 is a low-severity vulnerability in Libuvc, classified under Improper Resource Shutdown or Release. CVSS score: 3.3/10. Published 2026-02-06.
- How severe is CVE-2026-1991?
- Low severity. CVSS v3 base score is 3.3 out of 10.