How severe is CVE-2022-26438?

CVE-2022-26438 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-26438 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-26438?

CVE-2022-26438 primarily affects Mediatek Mt7603 Firmware. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-26438?

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

When was CVE-2022-26438 published?

CVE-2022-26438 was published on 2022-08-01 and last updated on 2026-06-17.

CVE-2022-26438

CVE-2022-26438 is a medium-severity vulnerability in Mediatek Mt7603 Firmware with a CVSS 3.x base score of 6.7. 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-787.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Mediatek Mt7603 Firmware
Published: 2022-08-01
Last modified: 2026-06-17

Description

In wifi driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: GN20220420013; Issue ID: GN20220420013.

Frequently asked questions

What is CVE-2022-26438?: In wifi driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: GN20220420013; Issue ID: GN20220420013.
How severe is CVE-2022-26438?: CVE-2022-26438 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-26438 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-26438?: CVE-2022-26438 primarily affects Mediatek Mt7603 Firmware. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-26438?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-26438 published?: CVE-2022-26438 was published on 2022-08-01 and last updated on 2026-06-17.

References

https://corp.mediatek.com/product-security-bulletin/August-2022

Affected products (13)

cpe:2.3:o:mediatek:mt7603_firmware:7.6.2.3:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt7610_firmware:7.6.2.3:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt7612_firmware:7.6.2.3:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt7613_firmware:7.6.2.3:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt7615_firmware:7.6.2.3:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt7620_firmware:7.6.2.3:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt7622_firmware:7.6.2.3:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt7628_firmware:7.6.2.3:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt7629_firmware:7.6.2.3:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt7915_firmware:7.6.2.3:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt7916_firmware:7.6.2.3:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt7986_firmware:7.6.2.3:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8981_firmware:7.6.2.3:*:*:*:*:*:*:*

More vulnerabilities in Mediatek Mt7603 Firmware

CVE-2022-32666 — High (CVSS 7.5): In Wi-Fi, there is a possible low throughput due to misrepresentation of critical information. This could lead to…
CVE-2022-32663 — 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…
CVE-2022-32656 — Medium (CVSS 6.7): In Wi-Fi driver, there is a possible undefined behavior due to incorrect error handling. This could lead to local…
CVE-2022-32655 — Medium (CVSS 6.7): In Wi-Fi driver, there is a possible undefined behavior due to incorrect error handling. This could lead to local…
CVE-2022-32654 — Medium (CVSS 6.7): In Wi-Fi driver, there is a possible undefined behavior due to incorrect error handling. This could lead to local…
CVE-2022-32659 — Medium (CVSS 6.7): In Wi-Fi driver, there is a possible undefined behavior due to incorrect error handling. This could lead to local…

All CVEs affecting Mediatek Mt7603 Firmware →

Other CWE-787 (Out-of-bounds Write) vulnerabilities

CVE-2026-42369 — Critical (CVSS 10.0): GV-VMS V20 is a Video Monitoring Software used to gather the feeds of many surveillance cameras and manage other…
CVE-2026-4746 — Critical (CVSS 10.0): Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src‎ modules). This vulnerability is…
CVE-2025-43300 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS…
CVE-2025-24201 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in…
CVE-2024-42479 — Critical (CVSS 10.0): llama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause…
CVE-2024-39791 — Critical (CVSS 10.0): Stack-based buffer overflow vulnerabilities affecting Vonets industrial wifi bridge relays and wifi bridge…

Browse all CWE-787 (Out-of-bounds Write) vulnerabilities →