How severe is CVE-2026-20771?

CVE-2026-20771 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability high.

Is CVE-2026-20771 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-20771?

CVE-2026-20771 affects Intel Quickassist Technology. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-20771?

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

Does CVE-2026-20771 have an EU (EUVD) identifier?

Yes. CVE-2026-20771 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29526.

When was CVE-2026-20771 published?

CVE-2026-20771 was published on 2026-05-12 and last updated on 2026-06-17.

CVE-2026-20771

CVE-2026-20771 is a medium-severity vulnerability in Intel Quickassist Technology with a CVSS 3.x base score of 6.1. 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: Medium (CVSS 3.x base score 6.1)
CVSS v4: 6.9
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-29526
Weakness: CWE-476
Affected product: Intel Quickassist Technology
Published: 2026-05-12
Last modified: 2026-06-17

Description

Null pointer dereference for some Intel(R) QAT software drivers for Windows before version 1.13 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 (low), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Frequently asked questions

What is CVE-2026-20771?: Null pointer dereference for some Intel(R) QAT software drivers for Windows before version 1.13 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 (low), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
How severe is CVE-2026-20771?: CVE-2026-20771 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability high.
Is CVE-2026-20771 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-20771?: CVE-2026-20771 affects Intel Quickassist Technology. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-20771?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-20771 have an EU (EUVD) identifier?: Yes. CVE-2026-20771 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29526.
When was CVE-2026-20771 published?: CVE-2026-20771 was published on 2026-05-12 and last updated on 2026-06-17.

References

https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01387.html

Affected products (1)

cpe:2.3:a:intel:quickassist_technology:*:*:*:*:*:windows:*:*

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