How severe is CVE-2026-1991?

CVE-2026-1991 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-1991 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-1991?

CVE-2026-1991 affects Libuvc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-1991?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-1991 have an EU (EUVD) identifier?

Yes. CVE-2026-1991 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5585.

When was CVE-2026-1991 published?

CVE-2026-1991 was published on 2026-02-06 and last updated on 2026-06-17.

CVE-2026-1991

CVE-2026-1991 is a low-severity vulnerability in Libuvc with a CVSS 3.x base score of 3.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: Low (CVSS 3.x base score 3.3)
CVSS v2: 1.7
CVSS v4: 1.9
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5585
Weakness: CWE-476
Affected product: Libuvc
Published: 2026-02-06
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-1991?: CVE-2026-1991 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-1991 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-1991?: CVE-2026-1991 affects Libuvc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-1991?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-1991 have an EU (EUVD) identifier?: Yes. CVE-2026-1991 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5585.
When was CVE-2026-1991 published?: CVE-2026-1991 was published on 2026-02-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libuvc:libuvc:*:*:*:*:*:*:*:*

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