How severe is CVE-2026-20451?

CVE-2026-20451 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-2026-20451 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-20451?

CVE-2026-20451 primarily affects Mediatek Mt8115 Firmware. In total, 32 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-20451?

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

Does CVE-2026-20451 have an EU (EUVD) identifier?

Yes. CVE-2026-20451 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26891.

When was CVE-2026-20451 published?

CVE-2026-20451 was published on 2026-05-04 and last updated on 2026-06-17.

CVE-2026-20451

CVE-2026-20451 is a medium-severity vulnerability in Mediatek Mt8115 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-843.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26891
Weakness: CWE-843
Affected product: Mediatek Mt8115 Firmware
Published: 2026-05-04
Last modified: 2026-06-17

Description

In slbc, there is a possible out of bounds write due to type confusion. 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: ALPS10828685; Issue ID: MSV-6504.

Frequently asked questions

What is CVE-2026-20451?: In slbc, there is a possible out of bounds write due to type confusion. 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: ALPS10828685; Issue ID: MSV-6504.
How severe is CVE-2026-20451?: CVE-2026-20451 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-2026-20451 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-20451?: CVE-2026-20451 primarily affects Mediatek Mt8115 Firmware. In total, 32 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-20451?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-20451 have an EU (EUVD) identifier?: Yes. CVE-2026-20451 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26891.
When was CVE-2026-20451 published?: CVE-2026-20451 was published on 2026-05-04 and last updated on 2026-06-17.

References

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

Affected products (32)

cpe:2.3:o:mediatek:mt8115_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8186_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8188_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8196_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8365_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8367_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8370_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8371_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8390_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8391_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8395_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8676_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8678_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8766_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8768_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8775_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8781_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8786_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8788e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8791t_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8792_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8793_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8796_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:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt2718_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6899_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6985_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6989_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6991_firmware:-:*:*:*:*:*:*:*

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