CVE-2022-32666: In Wi-Fi, there is a possible low throughput due to misrepresentation of critical information

This month

HIGH 7.5REMOTEWATCHLISTDOWNGRADEMITIGATEMITIGATE

CVE-2022-32666 is a high-severity flaw (CVSS 7.5) affecting yocto, mt7603 firmware, mt7613 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Wi-Fi, there is a possible low throughput due to misrepresentation of critical information. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: GN20220829014; Issue ID: GN20220829014.

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Published	2023-07-04
Last modified	2026-06-17

Publisher (CNA): MediaTek, Inc. · Vendor: linuxfoundation · mediatek

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

Am I affected?

Timeline

2023-07-04 02:15 UTCPublished CVE record published
2026-06-17 04:47 UTCUpdated Record last modified

linuxfoundation yocto DOWNGRADE

Affected: 4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0

1. Check installed version

apt-cache policy yocto || rpm -q yocto || yocto --version

2. No fixed release: DOWNGRADE to a release before 4.0 (Debian / Ubuntu)

apt-cache madison yocto sudo apt install yocto=<VERSION_BEFORE_4.0> sudo apt-mark hold yocto

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list yocto sudo dnf downgrade yocto-<VERSION_BEFORE_4.0> sudo dnf versionlock add yocto

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

mediatek mt7603 firmware MITIGATE

Affected: 7.6.6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.6.6.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

mediatek mt7613 firmware MITIGATE

Affected: 7.6.6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.6.6.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

mediatek mt7615 firmware MITIGATE

Affected: 7.6.6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.6.6.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

mediatek mt7622 firmware MITIGATE

Affected: 7.6.6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.6.6.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

mediatek mt7628 firmware MITIGATE

Affected: 7.6.6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.6.6.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2022-32666?

yocto: downgrade or apply the listed mitigation; mt7603 firmware: mitigate or apply the listed mitigation; mt7613 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-32666 being exploited?

CVE-2022-32666 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-2022-32666 affect?

CVE-2022-32666 affects yocto, mt7603 firmware, mt7613 firmware. Severity is high (CVSS 7.5). In Wi-Fi, there is a possible low throughput due to misrepresentation of critical information. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patc

How urgent is CVE-2022-32666?

Priority 52/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

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References

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