CVE-2026-20461

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01267281 / MOLY01318201; Issue ID: MSV-6486.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://corp.mediatek.com/product-security-bulletin/July-2026

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-01 04:17

Updated : 2026-07-01 18:16

NVD link : CVE-2026-20461

Mitre link : CVE-2026-20461

CVE.ORG link : CVE-2026-20461

JSON object : View

Products Affected

No product.

CWE

CWE-787

Out-of-bounds Write

{"id": "CVE-2026-20461", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20461", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-01T10:34:42.201901Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.6}]}, "affected": [{"source": "security@mediatek.com", "affectedData": [{"vendor": "MediaTek, Inc.", "product": "MediaTek chipset", "versions": [{"status": "affected", "version": "MT2737"}, {"status": "affected", "version": "MT6813"}, {"status": "affected", "version": "MT6835"}, {"status": "affected", "version": "MT6858"}, {"status": "affected", "version": "MT6878"}, {"status": "affected", "version": "MT6879"}, {"status": "affected", "version": "MT6886"}, {"status": "affected", "version": "MT6895"}, {"status": "affected", "version": "MT6896"}, {"status": "affected", "version": "MT6897"}, {"status": "affected", "version": "MT6899"}, {"status": "affected", "version": "MT6980"}, {"status": "affected", "version": "MT6983"}, {"status": "affected", "version": "MT6985"}, {"status": "affected", "version": "MT6988"}, {"status": "affected", "version": "MT6989"}, {"status": "affected", "version": "MT6990"}, {"status": "affected", "version": "MT6991"}, {"status": "affected", "version": "MT6993"}, {"status": "affected", "version": "MT8673"}, {"status": "affected", "version": "MT8676"}, {"status": "affected", "version": "MT8678"}, {"status": "affected", "version": "MT8755"}, {"status": "affected", "version": "MT8775"}, {"status": "affected", "version": "MT8792"}, {"status": "affected", "version": "MT8793"}, {"status": "affected", "version": "MT8795T"}, {"status": "affected", "version": "MT8796"}, {"status": "affected", "version": "MT8798"}, {"status": "affected", "version": "MT8863"}, {"status": "affected", "version": "MT8873"}, {"status": "affected", "version": "MT8883"}, {"status": "affected", "version": "MT8893"}], "defaultStatus": "unaffected"}]}], "published": "2026-07-01T04:17:15.130", "references": [{"url": "https://corp.mediatek.com/product-security-bulletin/July-2026", "source": "security@mediatek.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security@mediatek.com", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01267281 / MOLY01318201; Issue ID: MSV-6486."}], "lastModified": "2026-07-01T18:16:00.957", "sourceIdentifier": "security@mediatek.com"}