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CVE-2022-26438· NVD / CVE Program· CNA MediaTek

In wifi driver, there is a possible out of bounds write due to a missing bounds check.

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.

MediumCVSS 6.7 · v3.1—No exploit No fix recorded
Published
Aug 1, 2022
Updated
Jun 17, 2026
EPSS
0.3% · 16th percentile
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Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

Affected systems

VendorProduct
mediatekmt7603 firmware
mediatekmt7603
mediatekmt7610 firmware
mediatekmt7610
mediatekmt7612 firmware
mediatekmt7612
mediatekmt7613 firmware
mediatekmt7613
mediatekmt7615 firmware
mediatekmt7615
mediatekmt7620 firmware
mediatekmt7620

and 14 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • mediatek mt7603 firmware7.6.2.3
  • mediatek mt7610 firmware7.6.2.3
  • mediatek mt7612 firmware7.6.2.3
  • mediatek mt7613 firmware7.6.2.3
  • mediatek mt7615 firmware7.6.2.3
  • mediatek mt7620 firmware7.6.2.3
  • mediatek mt7622 firmware7.6.2.3
  • mediatek mt7628 firmware7.6.2.3
  • mediatek mt7629 firmware7.6.2.3
  • mediatek mt7915 firmware7.6.2.3
  • mediatek mt7916 firmware7.6.2.3
  • mediatek mt7986 firmware7.6.2.3
  • mediatek mt8981 firmware7.6.2.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (MediaTek). Independent of NVD's CPE analysis and usually ahead of it.

  • MediaTek, Inc. MT7603, MT7610, MT7612, MT7613, MT7615, MT7620, MT7622, MT7628, MT7629, MT7915, MT7916, MT7986, MT8981

    • 7.6.2.3affected

Same product

mediatek: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-32659In Wi-Fi driver, there is a possible undefined behavior due to incorrect error handling.
    26Monitor
  • CVE-2022-32658In Wi-Fi driver, there is a possible undefined behavior due to incorrect error handling.
    26Monitor
  • CVE-2022-32657In Wi-Fi driver, there is a possible undefined behavior due to incorrect error handling.
    26Monitor
  • CVE-2022-26445In wifi driver, there is a possible out of bounds write due to a missing bounds check.
    26Monitor
  • CVE-2022-26444In wifi driver, there is a possible out of bounds write due to a missing bounds check.
    26Monitor
  • CVE-2022-26443In wifi driver, there is a possible out of bounds write due to a missing bounds check.
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • Administrator privileges are required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records