How severe is CVE-2026-20778?

CVE-2026-20778 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-20778 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-20778?

CVE-2026-20778 affects Intel Proset/wireless Wifi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-20778?

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

When was CVE-2026-20778 published?

CVE-2026-20778 was published on 2026-08-11 and last updated on 2026-09-01.

CVE-2026-20778

CVE-2026-20778 is a medium-severity vulnerability in Intel Proset/wireless Wifi with a CVSS 3.x base score of 6.8. 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-125.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v4: 7.0
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Intel Proset/wireless Wifi
Published: 2026-08-11
Last modified: 2026-09-01

Description

Out-of-bounds read for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 0: Kernel may allow a denial of service. Unprivileged software adversary with an unauthenticated user combined with a high complexity attack may enable denial of service. This result may potentially occur via adjacent access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (high) impacts.

Frequently asked questions

What is CVE-2026-20778?: Out-of-bounds read for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 0: Kernel may allow a denial of service. Unprivileged software adversary with an unauthenticated user combined with a high complexity attack may enable denial of service. This result may potentially occur via adjacent access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (high) impacts.
How severe is CVE-2026-20778?: CVE-2026-20778 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-20778 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-20778?: CVE-2026-20778 affects Intel Proset/wireless Wifi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-20778?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-20778 published?: CVE-2026-20778 was published on 2026-08-11 and last updated on 2026-09-01.

References

https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01468.html

Affected products (1)

cpe:2.3:a:intel:proset\/wireless_wifi:*:*:*:*:*:*:*:*

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