CVE-2026-20507

In Audio HAL, there is a possible escalation of privilege due to use after free. 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: ALPS11191981; Issue ID: MSV-9125.

CVSS v3 6.7 MEDIUM

6.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.mediatek.com/product-security-bulletin/September-2026

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-07 02:17

Updated : 2026-09-08 18:37

NVD link : CVE-2026-20507

Mitre link : CVE-2026-20507

CVE.ORG link : CVE-2026-20507

JSON object : View

Products Affected

No product.

CWE

CWE-416

Use After Free

{"id": "CVE-2026-20507", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20507", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-07T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.8}]}, "affected": [{"source": "security@mediatek.com", "affectedData": [{"vendor": "MediaTek, Inc.", "product": "MediaTek chipset", "versions": [{"status": "affected", "version": "MT2718"}, {"status": "affected", "version": "MT6739"}, {"status": "affected", "version": "MT6761"}, {"status": "affected", "version": "MT6765"}, {"status": "affected", "version": "MT6768"}, {"status": "affected", "version": "MT6769"}, {"status": "affected", "version": "MT6781"}, {"status": "affected", "version": "MT6789"}, {"status": "affected", "version": "MT6833"}, {"status": "affected", "version": "MT6835"}, {"status": "affected", "version": "MT6853"}, {"status": "affected", "version": "MT6855"}, {"status": "affected", "version": "MT6858"}, {"status": "affected", "version": "MT6877"}, {"status": "affected", "version": "MT6878"}, {"status": "affected", "version": "MT6879"}, {"status": "affected", "version": "MT6881"}, {"status": "affected", "version": "MT6883"}, {"status": "affected", "version": "MT6885"}, {"status": "affected", "version": "MT6886"}, {"status": "affected", "version": "MT6889"}, {"status": "affected", "version": "MT6893"}, {"status": "affected", "version": "MT6895"}, {"status": "affected", "version": "MT6897"}, {"status": "affected", "version": "MT6899"}, {"status": "affected", "version": "MT6983"}, {"status": "affected", "version": "MT6985"}, {"status": "affected", "version": "MT6989"}, {"status": "affected", "version": "MT6991"}, {"status": "affected", "version": "MT6993"}, {"status": "affected", "version": "MT8126"}, {"status": "affected", "version": "MT8168"}, {"status": "affected", "version": "MT8171"}, {"status": "affected", "version": "MT8186"}, {"status": "affected", "version": "MT8188"}, {"status": "affected", "version": "MT8189"}, {"status": "affected", "version": "MT8196"}, {"status": "affected", "version": "MT8321"}, {"status": "affected", "version": "MT8365"}, {"status": "affected", "version": "MT8367"}, {"status": "affected", "version": "MT8385"}, {"status": "affected", "version": "MT8390"}, {"status": "affected", "version": "MT8391"}, {"status": "affected", "version": "MT8668"}, {"status": "affected", "version": "MT8676"}, {"status": "affected", "version": "MT8678"}, {"status": "affected", "version": "MT8696"}, {"status": "affected", "version": "MT8755"}, {"status": "affected", "version": "MT8766"}, {"status": "affected", "version": "MT8766R"}, {"status": "affected", "version": "MT8768"}, {"status": "affected", "version": "MT8771"}, {"status": "affected", "version": "MT8775"}, {"status": "affected", "version": "MT8781"}, {"status": "affected", "version": "MT8786"}, {"status": "affected", "version": "MT8788E"}, {"status": "affected", "version": "MT8791T"}, {"status": "affected", "version": "MT8792"}, {"status": "affected", "version": "MT8796"}, {"status": "affected", "version": "MT8797"}, {"status": "affected", "version": "MT8798"}, {"status": "affected", "version": "MT8799"}, {"status": "affected", "version": "MT8873"}, {"status": "affected", "version": "MT8883"}, {"status": "affected", "version": "MT8893"}, {"status": "affected", "version": "MT8910"}], "defaultStatus": "unaffected"}]}], "published": "2026-09-07T02:17:19.360", "references": [{"url": "https://www.mediatek.com/product-security-bulletin/September-2026", "source": "security@mediatek.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security@mediatek.com", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In Audio HAL, there is a possible escalation of privilege due to use after free. 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: ALPS11191981; Issue ID: MSV-9125."}], "lastModified": "2026-09-08T18:37:41.047", "sourceIdentifier": "security@mediatek.com"}