How severe is CVE-2026-20498?

CVE-2026-20498 has a CVSS 3.x base score of 6.0, 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 none.

Is CVE-2026-20498 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-2026-20498?

CVE-2026-20498 primarily affects Mediatek Mt6991 Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-20498?

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

When was CVE-2026-20498 published?

CVE-2026-20498 was published on 2026-08-03 and last updated on 2026-08-19.

CVE-2026-20498

CVE-2026-20498 is a medium-severity vulnerability in Mediatek Mt6991 Firmware with a CVSS 3.x base score of 6.0. 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-1287.

Key facts

Severity: Medium (CVSS 3.x base score 6.0)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1287
Affected product: Mediatek Mt6991 Firmware
Published: 2026-08-03
Last modified: 2026-08-19

Description

In geniezone, there is a possible escalation of privilege due to a missing permission 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: ALPS10900493; Issue ID: MSV-6765.

Frequently asked questions

What is CVE-2026-20498?: In geniezone, there is a possible escalation of privilege due to a missing permission 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: ALPS10900493; Issue ID: MSV-6765.
How severe is CVE-2026-20498?: CVE-2026-20498 has a CVSS 3.x base score of 6.0, 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 none.
Is CVE-2026-20498 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-2026-20498?: CVE-2026-20498 primarily affects Mediatek Mt6991 Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-20498?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-20498 published?: CVE-2026-20498 was published on 2026-08-03 and last updated on 2026-08-19.

References

https://www.mediatek.com/product-security-bulletin/August-2026

Affected products (10)

cpe:2.3:o:mediatek:mt6991_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8768_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8791t_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8792_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8796_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8799_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8873_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8883_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8893_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8910_firmware:-:*:*:*:*:*:*:*

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