CVE-2022-32663: In Wi-Fi driver, there is a possible system crash due to null pointer dereference

This month

HIGH 7.5REMOTEMITIGATEMITIGATEMITIGATE

CVE-2022-32663 is a high-severity flaw (CVSS 7.5) affecting mt5221 firmware, 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 driver, there is a possible system crash due to null pointer dereference. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: GN20220720014; Issue ID: GN20220720014.

Why this priority

High severity
Remotely exploitable, no login, no user action

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	1.6% (top 24%)
CISA exploited list	No
Weakness	CWE-476
Published	2023-02-06
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2023-02-06 20:15 UTCPublished CVE record published
2026-06-17 04:47 UTCUpdated Record last modified

mediatek mt5221 firmware MITIGATE

Affected: 7.6.6.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.6.6.1

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 mt7603 firmware MITIGATE

Affected: 7.6.6.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.6.6.1

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: 7.6.6.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.6.6.1

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: 7.6.6.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.6.6.1

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: 7.6.6.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.6.6.1

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: 7.6.6.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.6.6.1

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-2022-32663?

mt5221 firmware: mitigate 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-2022-32663 being exploited?

CVE-2022-32663 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-2022-32663 affect?

CVE-2022-32663 affects mt5221 firmware, mt7603 firmware, mt7613 firmware. Severity is high (CVSS 7.5). In Wi-Fi driver, there is a possible system crash due to null pointer dereference. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: GN2022

How urgent is CVE-2022-32663?

Priority 50/100. High severity; Remotely exploitable, no login, no user action

Software pages

Wi-Fi vulnerabilities

Related CVEs

CVE-2022-32656 MEDIUM 6.7 MITIGATE MITIGATE In Wi-Fi driver, there is a possible undefined behavior due to incorrect error handling
CVE-2022-32655 MEDIUM 6.7 MITIGATE MITIGATE In Wi-Fi driver, there is a possible undefined behavior due to incorrect error handling
CVE-2022-32654 MEDIUM 6.7 MITIGATE MITIGATE In Wi-Fi driver, there is a possible undefined behavior due to incorrect error handling

References

← Back to latest CVEs