{"id":"CVE-2026-20479","state":"PUBLISHED","title":"In Modem, there is a possible out of bounds read due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlle","description":"In Modem, there is a possible out of bounds read 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: MOLY00741071; Issue ID: MSV-7620.","publishedAt":"2026-08-03T02:05:38.909Z","updatedAt":"2026-08-03T18:59:07.574Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"MediaTek","products":["MediaTek, Inc. MediaTek chipset"],"affected":[{"vendor":"MediaTek, Inc.","product":"MediaTek chipset","defaultStatus":"unaffected","versions":[{"version":"MT2735","status":"affected"},{"version":"MT6833","status":"affected"},{"version":"MT6853","status":"affected"},{"version":"MT6855","status":"affected"},{"version":"MT6873","status":"affected"},{"version":"MT6875","status":"affected"},{"version":"MT6877","status":"affected"},{"version":"MT6880","status":"affected"},{"version":"MT6883","status":"affected"},{"version":"MT6885","status":"affected"},{"version":"MT6889","status":"affected"},{"version":"MT6890","status":"affected"},{"version":"MT6891","status":"affected"},{"version":"MT6893","status":"affected"},{"version":"MT8675","status":"affected"},{"version":"MT8771","status":"affected"},{"version":"MT8791","status":"affected"},{"version":"MT8791T","status":"affected"},{"version":"MT8797","status":"affected"}]}],"references":["https://www.mediatek.com/product-security-bulletin/August-2026"],"weaknesses":["CWE-125"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/20xxx/CVE-2026-20479.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-20479","state":"PUBLISHED","datePublished":"2026-08-03T02:05:38.909Z","dateUpdated":"2026-08-03T18:59:07.574Z","assignerShortName":"MediaTek","assignerOrgId":"ee979b05-11f8-4f25-a7e0-a1fa9c190374","dateReserved":"2025-11-03T01:30:59.021Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"In Modem, there is a possible out of bounds read 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: MOLY00741071; Issue ID: MSV-7620."}],"affected":[{"vendor":"MediaTek, Inc.","product":"MediaTek chipset","defaultStatus":"unaffected","versions":[{"version":"MT2735","status":"affected"},{"version":"MT6833","status":"affected"},{"version":"MT6853","status":"affected"},{"version":"MT6855","status":"affected"},{"version":"MT6873","status":"affected"},{"version":"MT6875","status":"affected"},{"version":"MT6877","status":"affected"},{"version":"MT6880","status":"affected"},{"version":"MT6883","status":"affected"},{"version":"MT6885","status":"affected"},{"version":"MT6889","status":"affected"},{"version":"MT6890","status":"affected"},{"version":"MT6891","status":"affected"},{"version":"MT6893","status":"affected"},{"version":"MT8675","status":"affected"},{"version":"MT8771","status":"affected"},{"version":"MT8791","status":"affected"},{"version":"MT8791T","status":"affected"},{"version":"MT8797","status":"affected"}]}],"references":[{"url":"https://www.mediatek.com/product-security-bulletin/August-2026"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-125","type":"CWE","lang":"en","description":"CWE-125 Out-of-bounds Read"}]}],"providerMetadata":{"shortName":"MediaTek","orgId":"ee979b05-11f8-4f25-a7e0-a1fa9c190374","dateUpdated":"2026-08-03T02:05:38.909Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/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"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-08-03T18:58:43.400693Z","id":"CVE-2026-20479","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-03T18:59:07.574Z"}}]}}}