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CVE-2021-3146: The Dolby Audio X2 (DAX2) API service before 0.8.8.90 on Windows allows local users to gain privileges.

37
Routine
HIGH 7.8UPGRADE

CVE-2021-3146 is a high-severity flaw (CVSS 7.8) affecting audio x2. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Dolby Audio X2 (DAX2) API service before 0.8.8.90 on Windows allows local users to gain privileges.

Why this priority

  • High severity

A fixed release or distro patch exists.

Risk facts

CVSS score7.8 (High)
Attack vectorLocal
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.4% (top 62%)
CISA exploited listNo
WeaknessCWE-426
Published2021-04-08
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: dolby

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

dolby audio x2 UPGRADE
Affected: < 0.8.8.90
Fixed in: 0.8.8.90
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy audio-x2 || rpm -q audio-x2 || audio-x2 --version
2. UPGRADE to 0.8.8.90 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade audio-x2
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade audio-x2
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-2021-3146?

audio x2: upgrade to 0.8.8.90. Exact commands for each OS are on this page.

Is CVE-2021-3146 being exploited?

CVE-2021-3146 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-2021-3146 affect?

CVE-2021-3146 affects audio x2. Severity is high (CVSS 7.8). The Dolby Audio X2 (DAX2) API service before 0.8.8.90 on Windows allows local users to gain privileges.

How urgent is CVE-2021-3146?

Priority 37/100. High severity

Software pages

Windows vulnerabilities

References

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