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CVE-2026-20731

Improper buffer restrictions for the Intel(R) NPU Driver for all versions within Ring 3: User...

6.9 MediumFix available

Improper buffer restrictions for the Intel(R) NPU Driver for all versions within Ring 3: User Applications may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (low) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
Low
Availability
High

Exploit likelihood

0.14%Unchanged since Aug 12, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.9

Improper buffer restrictions for the Intel(R) NPU Driver for all versions within Ring 3: User Applications may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (low) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Record
CVE-2026-20731
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Weakness
CWE-119, CWE-119
Updated
2026-11-02
EUVDEUVD-2026-56479 6.9

Improper buffer restrictions for the Intel(R) NPU Driver for all versions within Ring 3: User Applications may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (low) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Record
EUVD-2026-56479
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-363q-22g7-fmmm 6.9

Improper buffer restrictions for the Intel(R) NPU Driver for all versions within Ring 3: User...

Improper buffer restrictions for the Intel(R) NPU Driver for all versions within Ring 3: User Applications may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (low) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Record
GHSA-363q-22g7-fmmm
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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
CVSS 3.1
6.1 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Weakness
CWE-119
Updated
2026-11-02
NVD 6.9

Improper buffer restrictions for the Intel(R) NPU Driver for all versions within Ring 3: User Applications may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (low) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Record
CVE-2026-20731
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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
CVSS 3.1
6.1 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Weakness
CWE-119
Updated
2026-11-02
OSV 6.1

Improper buffer restrictions for the Intel(R) NPU Driver for all versions within Ring 3: User Applications may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (low) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Record
CVE-2026-20731
CVSS 3.1
6.1 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2026-20731 6.1

Improper buffer restrictions for the Intel(R) NPU Driver for all versions within Ring 3: User Applications may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (low) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Record
DEBIAN-CVE-2026-20731
CVSS 3.1
6.1 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
firmware-nonfree
Debian:13
All versions, plus listed versions
0.10.100.110.120.13
Show 45 moreShow less
0.13~bpo40+10.140.14+lenny10.14+lenny20.150.160.16~bpo50+10.170.17~bpo50+10.180.190.20.200.210.220.230.23~bpo50+10.240.24~bpo50+10.250.260.270.27~bpo50+10.280.28+squeeze10.290.30.300.310.320.32~bpo60+10.330.340.350.35~bpo60+10.360.36+wheezy.10.36+wheezy.1~bpo60+10.370.380.38~bpo70+10.390.39~bpo70+10.40.4+etchnhalf.1
None known
firmware-nonfree
Debian:14
before 20260410-1, plus listed versions
0.10.100.110.120.13
Show 45 moreShow less
0.13~bpo40+10.140.14+lenny10.14+lenny20.150.160.16~bpo50+10.170.17~bpo50+10.180.190.20.200.210.220.230.23~bpo50+10.240.24~bpo50+10.250.260.270.27~bpo50+10.280.28+squeeze10.290.30.300.310.320.32~bpo60+10.330.340.350.35~bpo60+10.360.36+wheezy.10.36+wheezy.1~bpo60+10.370.380.38~bpo70+10.390.39~bpo70+10.40.4+etchnhalf.1
20260410-1

History

History
RecordedChangedSources
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-20731 is a medium vulnerability (CVSS 6.9) in Intel Neural Processing Unit Driver, published August 11, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.14%, the 3rd percentile. Fixed in firmware-nonfree 20260410-1.

References

This page doesn't list everything

Left out here: 302 versions. The JSON record has them.

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