{"answers":{"affected":"It affects 4 products.","exploited":"There is no known exploitation of CVE-2026-20405 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-20405 is a medium-severity denial of service vulnerability in Mediatek Nr15, published on 2 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-20405 and fix it if it is affected.\n\nWhat it is: CVE-2026-20405 is a medium-severity denial of service vulnerability in Mediatek Nr15, published on 2 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-20405 in the wild and no public exploit code.\n\nAffected product: Mediatek Nr15. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-20405/ (Markdown: https://insights.sbomify.com/CVE-2026-20405/index.md)","id":"CVE-2026-20405","markdown":"https://insights.sbomify.com/CVE-2026-20405/index.md","name":"CVE-2026-20405","record":{"aliases":["A-464956288","ASB-A-464956288","GHSA-fg7c-83g8-7vg3","M-MOLY01688495"],"analysis":{"component_type":"hardware_firmware","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"MediaTek modem firmware","requires_auth":"none","summary":"A missing bounds check in MediaTek modem firmware allows remote attackers to cause a system crash via a rogue base station.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"MediaTek","cpe":[{"product":"nr15","vendor":"mediatek"},{"product":"nr16","vendor":"mediatek"},{"product":"nr17","vendor":"mediatek"},{"product":"nr17r","vendor":"mediatek"}],"cvss":{"score":6.5,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-617","name":"Reachable Assertion"}],"description":"In Modem, there is a possible system crash 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: MOLY01688495; Issue ID: MSV-4818.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Denial of service in MediaTek chipset","id":"CVE-2026-20405","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"mediatek:nr15","products":["mediatek:nr15","mediatek:nr16"],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in MediaTek chipset","id":"CVE-2026-20406"},"packages":[],"prev":{"headline":"Denial of service in MediaTek chipset","id":"CVE-2026-20404"},"products":["MediaTek chipset"],"published":"2026-02-02","related":[{"cvss_score":9.8,"headline":"Memory corruption in MT2735, MT2737, MT6833, MT6835, MT6835T, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895T, MT6896, MT6897, MT6980, MT6980D, MT6983, MT6985, MT6989, MT6990","id":"CVE-2024-20082","kev_date_added":null,"published":"2024-08-14"},{"cvss_score":8.8,"headline":"Memory corruption in MT2735, MT2737, MT6813, MT6815, MT6833, MT6833P, MT6835, MT6835T, MT6853, MT6853T, MT6855, MT6855T, MT6873, MT6875, MT6875T, MT6877, MT6877T, MT6877TT, MT6878, MT6878M, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895TT, MT6896, MT6897, MT6899, MT6980, MT6980D, MT6983, MT6983T, MT6985, MT6985T, MT6989, MT6989T, MT6990, MT6991, MT8673, MT8675, MT8676, MT8678, MT8771, MT8791, MT8791T, MT8792, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893","id":"CVE-2025-20708","kev_date_added":null,"published":"2025-09-01"},{"cvss_score":7.5,"headline":"Denial of service in MT2735, MT6833, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT8675, MT8771, MT8791, MT8791T, MT8797","id":"CVE-2024-20094","kev_date_added":null,"published":"2024-10-07"},{"cvss_score":7.5,"headline":"Denial of service in MT2735, MT6297, MT6833, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT8675, MT8791, MT8791T, MT8797","id":"CVE-2024-20003","kev_date_added":null,"published":"2024-02-05"},{"cvss_score":7.5,"headline":"Denial of service in MT2735, MT6297, MT6833, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT8675, MT8791, MT8791T, MT8797","id":"CVE-2024-20004","kev_date_added":null,"published":"2024-02-05"},{"cvss_score":7.5,"headline":"Memory corruption in MT2735, MT6813, MT6833, MT6833P, MT6835, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6877T, MT6878, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895T, MT6896, MT6897, MT6980, MT6980D, MT6983T, MT6983W, MT6983Z, MT6985, MT6985T, MT6989, MT6990, MT8673, MT8675, MT8676, MT8791, MT8791T, MT8792, MT8796, MT8797, MT8798","id":"CVE-2023-32886","kev_date_added":null,"published":"2024-01-02"},{"cvss_score":7.5,"headline":"Denial of service in MT2735, MT6813, MT6833, MT6833P, MT6835, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6877T, MT6878, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895T, MT6896, MT6897, MT6980, MT6980D, MT6983T, MT6983W, MT6983Z, MT6985, MT6985T, MT6989, MT6990","id":"CVE-2023-32887","kev_date_added":null,"published":"2024-01-02"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-30","vendors":["MediaTek, Inc."]},"summary":"A missing bounds check in MediaTek modem firmware allows remote attackers to cause a system crash via a rogue base station.","url":"https://insights.sbomify.com/CVE-2026-20405/"}