CVE-2026-20482

In wlan STA FW, there is a possible system becoming unresponsive due to logging. This could lead to remote (proximal/adjacent) denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00486814; Issue ID: MSV-6824.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.mediatek.com/product-security-bulletin/August-2026	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:mediatek:mt8532_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:mediatek:mt8532:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:mediatek:mt7902_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:mediatek:mt7902:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:o:mediatek:mt7921_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:mediatek:mt7921:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND

cpe:2.3:o:mediatek:mt7922_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:mediatek:mt7922:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND

cpe:2.3:o:mediatek:mt8518s_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:mediatek:mt8518s:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-03 03:16

Updated : 2026-08-19 17:01

NVD link : CVE-2026-20482

Mitre link : CVE-2026-20482

CVE.ORG link : CVE-2026-20482

JSON object : View

Products Affected

mediatek

mt7902
mt7922
mt7902_firmware
mt8518s_firmware
mt7921
mt7921_firmware
mt8532_firmware
mt8518s
mt7922_firmware
mt8532

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

{"id": "CVE-2026-20482", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20482", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-03T19:43:32.597237Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security@mediatek.com", "affectedData": [{"vendor": "MediaTek, Inc.", "product": "MediaTek chipset", "versions": [{"status": "affected", "version": "MT7902"}, {"status": "affected", "version": "MT7921"}, {"status": "affected", "version": "MT7922"}, {"status": "affected", "version": "MT8518S"}, {"status": "affected", "version": "MT8532"}], "defaultStatus": "unaffected"}]}], "published": "2026-08-03T03:16:43.317", "references": [{"url": "https://www.mediatek.com/product-security-bulletin/August-2026", "tags": ["Vendor Advisory"], "source": "security@mediatek.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@mediatek.com", "description": [{"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "value": "In wlan STA FW, there is a possible system becoming unresponsive due to logging. This could lead to remote (proximal/adjacent) denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00486814; Issue ID: MSV-6824."}], "lastModified": "2026-08-19T17:01:34.653", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt8532_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BB5568FB-4D73-40F2-92E7-6E22780BF0F2"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt8532:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "EE18D5C2-0423-4CE5-86E7-69E7BB131BBF"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt7902_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C88EAF30-A899-478B-BF4A-9DC61E1177B4"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt7902:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "91DEA745-47A8-43F1-A1B2-F53F651A99EF"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt7921_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FDF9ABD6-2AEF-43FF-A3B9-C4AF11E7C4CC"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt7921:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "32AFEA0A-FFE2-4EA9-8B51-7E3E75DE65CC"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt7922_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FC8D3E58-DC77-4EF8-94F5-D7C12E4CE1C1"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt7922:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "EA2A6813-7138-441E-A9E4-FF62FCBD797A"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mediatek:mt8518s_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "773DA646-5B06-47AF-9272-856DFB6C6DFE"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt8518s:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "6069CD03-6AB1-4A06-88CF-EFBDEA84CDE2"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "security@mediatek.com"}