CVE-2026-20891: Improper authentication for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 2: Device Driv

Q: How do I fix CVE-2026-20891?

proset\/wireless wifi: upgrade to 24.10.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-20891 being exploited?

CVE-2026-20891 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-20891 affect?

CVE-2026-20891 affects proset\/wireless wifi. Severity is high (CVSS 7.9). Improper authentication for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 2: Device Drivers may allow an escalation of privilege. Unprivileged software adversary with an unauthenticated user combined with a low complex

Routine

HIGH 7.9UPGRADE

CVE-2026-20891 is a high-severity flaw (CVSS 7.9) affecting proset\/wireless wifi. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper authentication for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 2: Device Drivers may allow an escalation of privilege. Unprivileged software adversary with an unauthenticated user combined with a low complexity attack may enable local code execution. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The p

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.9 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-287
Published	2026-08-11
Last modified	2026-08-26

Publisher (CNA): Intel Corporation · Vendor: intel

Last updated 2026-08-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-11 17:17 UTCPublished CVE record published
2026-08-26 19:26 UTCUpdated Record last modified

intel proset\/wireless wifi UPGRADE

Affected: < 24.10.0

Fixed in: 24.10.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy prosetwireless-wifi || rpm -q prosetwireless-wifi || prosetwireless-wifi --version

2. UPGRADE to 24.10.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade prosetwireless-wifi

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade prosetwireless-wifi

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-20891?

proset\/wireless wifi: upgrade to 24.10.0. Exact commands for each OS are on this page.

Is CVE-2026-20891 being exploited?

CVE-2026-20891 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-20891 affect?

CVE-2026-20891 affects proset\/wireless wifi. Severity is high (CVSS 7.9). Improper authentication for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 2: Device Drivers may allow an escalation of privilege. Unprivileged software adversary with an unauthenticated user combined with a low complex

How urgent is CVE-2026-20891?

Priority 29/100. High severity

Software pages

Windows vulnerabilities · Intel vulnerabilities · Wi-Fi vulnerabilities

Related CVEs

CVE-2026-20886 HIGH 7.4 UPGRADE Out-of-bounds write for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 2: Device Drivers
CVE-2026-20878 HIGH 7.4 UPGRADE Null pointer dereference for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 2: Device Dri
CVE-2026-20787 HIGH 7.4 UPGRADE Null pointer dereference for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 2: Device Dri
CVE-2026-20780 MEDIUM 6.5 UPGRADE Uncontrolled resource consumption for some Intel(R) PROSet/Wireless WiFi Software for Windows within Ring 2: D
CVE-2026-20749 HIGH 8.8 UPGRADE Out-of-bounds read for some Intel(R) PROSet/Wireless WiFi Software within Ring 2: Device Drivers may allow an

References

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