How severe is CVE-2026-20436?

CVE-2026-20436 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-2026-20436 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-20436?

CVE-2026-20436 affects Mediatek Nbiot Sdk. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-20436?

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

Does CVE-2026-20436 have an EU (EUVD) identifier?

Yes. CVE-2026-20436 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9161.

When was CVE-2026-20436 published?

CVE-2026-20436 was published on 2026-03-02 and last updated on 2026-06-17.

CVE-2026-20436

CVE-2026-20436 is a medium-severity vulnerability in Mediatek Nbiot Sdk 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-120.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9161
Weakness: CWE-120
Affected product: Mediatek Nbiot Sdk
Published: 2026-03-02
Last modified: 2026-06-17

Description

In wlan STA driver, there is a possible escalation of privilege due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: WCNCR00473802; Issue ID: MSV-5970.

Frequently asked questions

What is CVE-2026-20436?: In wlan STA driver, there is a possible escalation of privilege due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: WCNCR00473802; Issue ID: MSV-5970.
How severe is CVE-2026-20436?: CVE-2026-20436 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-2026-20436 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-20436?: CVE-2026-20436 affects Mediatek Nbiot Sdk. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-20436?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-20436 have an EU (EUVD) identifier?: Yes. CVE-2026-20436 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9161.
When was CVE-2026-20436 published?: CVE-2026-20436 was published on 2026-03-02 and last updated on 2026-06-17.

References

https://corp.mediatek.com/product-security-bulletin/March-2026

Affected products (1)

cpe:2.3:a:mediatek:nbiot_sdk:*:*:*:*:*:*:*:*

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