CVE-2026-1991Public exploit

Local process crash via malformed UVC descriptor

Published Feb 6, 2026 · Updated Feb 6, 2026

NULL pointer dereference in libuvc 0.0.1 through 0.0.7 allows local users to crash a consuming process via a malformed UVC descriptor. The public reproducer reaches uvc_scan_streaming in src/device.c, where a structure-member read through address 0x10 triggers an abort. Low-privileged local access is required; the demonstrated consequence is a process crash, with no confidentiality or integrity impact.

CVSS severity5.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

NULL pointer dereference in libuvc 0.0.1 through 0.0.7 allows local users to crash a consuming process via a malformed UVC descriptor. The public reproducer reaches uvc_scan_streaming in src/device.c, where a structure-member read through address 0x10 triggers an abort. Low-privileged local access is required; the demonstrated consequence is a process crash, with no confidentiality or integrity impact.

The record

CVE
CVE-2026-1991
Published
Feb 6, 2026
Updated
Feb 6, 2026
Vendor
libuvc
Product
libuvc
Classifications
CWE-404, CWE-476
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.0.1
  2. Affected versionversion=0.0.2
  3. Affected versionversion=0.0.3
  4. Affected versionversion=0.0.4
  5. Affected versionversion=0.0.5
  6. Affected versionversion=0.0.6
  7. Affected versionversion=0.0.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

libuvc · libuvcversion=0.0.1; version=0.0.2; version=0.0.3; version=0.0.4; version=0.0.5; version=0.0.6; version=0.0.7

Published CVSS scores

1.9VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
1.7VulDBAV:L/AC:L/Au:S/C:N/I:N/A:P
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
CWE-476NULL Pointer Dereference

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo