ZDF
Sign inSign up

Vulnerabilities

Security fix · CVE-2026-20452

In wlan AP driver, there is a possible memory corruption due to a heap buffer overflow.

Published Jun 1, 2026 · catalog updated Jul 22, 2026 · mt6890 firmware

Check if you run it

No confirmed exploitation is on record for CVE-2026-20452. EPSS is 0.43%. Act only if a listed version of mt6890 firmware is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.43%
Remediation
Advisory link
Affected products
cpe mediatek/mt6890 firmware · cpe mediatek/mt7615 firmware · cpe mediatek/mt7915 firmware · cpe mediatek/mt7916 firmware · cpe mediatek/mt7981 firmware · cpe mediatek/mt7986 firmware

In wlan AP driver, there is a possible memory corruption due to a heap buffer overflow. This could lead to remote (proximal/adjacent) code execution with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480138; Issue ID: MSV-6295.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe mediatek/mt6890 firmwareversion unspecified
  • cpe mediatek/mt7615 firmwareversion unspecified
  • cpe mediatek/mt7915 firmwareversion unspecified
  • cpe mediatek/mt7916 firmwareversion unspecified
  • cpe mediatek/mt7981 firmwareversion unspecified
  • cpe mediatek/mt7986 firmwareversion unspecified
  • cpe mediatek/mt7990 firmwareversion unspecified
  • cpe mediatek/mt7992 firmwareversion unspecified
  • cpe mediatek/mt7993 firmwareversion unspecified

How to fix CVE-2026-20452

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-20452. EPSS is 0.43%. Act only if a listed version of mt6890 firmware is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-122: Heap-based Buffer Overflow. EPSS 0.43%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 1, 2026 · NIST NVD

    Detected

    In wlan AP driver, there is a possible memory corruption due to a heap buffer overflow. This could lead to remote (proximal/adjacent) code execution with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480138; Issue ID: MSV-6295.

  2. Jul 22, 2026 · NIST NVD

    Updated

    In wlan AP driver, there is a possible memory corruption due to a heap buffer overflow. This could lead to remote (proximal/adjacent) code execution with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480138; Issue ID: MSV-6295.

Sources

  • CVE.orgVulnerability recordCVE-2026-20452

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-20452

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-20452

    In wlan AP driver, there is a possible memory corruption due to a heap buffer overflow. This could lead to remote (proximal/adjacent) code execution with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480138; Issue ID: MSV-6295

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.