{"id":"CVE-2021-37605","aliases":["EUVD-2021-24163","GHSA-22wm-6r58-545p"],"status":"published","title":"In the Microchip MiWi v6.5 software stack, there is a possibility of frame counters being being...","description":"In version 6.5 Microchip MiWi software and all previous versions including legacy products, the stack is validating only two out of four Message Integrity Check (MIC) bytes.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.0128,"percentile":0.70429,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-670","CWE-863"],"published":"2021-08-05T15:52:38Z","modified":"2026-06-17T04:00:49Z","products":[{"vendor":"microchip","product":"miwi"}],"references":[{"url":"https://www.microchip.com/product-change-notifications/#/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.microchip.com/en-us/products/wireless-connectivity/sub-ghz/miwi-protocol","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://ww1.microchip.com/downloads/en/DeviceDoc/asf-release-notes-3.50.0.100-readme.pdf","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.microchip.com/en-us/development-tools-tools-and-software/libraries-code-examples-and-more/advanced-software-framework-for-sam-devices#Downloads","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://ww1.microchip.com/downloads/en/DeviceDoc/asf-release-notes-3.51.0.101-readme.pdf","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://www.microchip.com/en-us/products/wireless-connectivity/software-vulnerability-response/miwi-software-vulnerability","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-37605"},{"url":"https://github.com/advisories/GHSA-22wm-6r58-545p"}],"sources":{"cve":[{"id":"CVE-2021-37605","description":"In version 6.5 Microchip MiWi software and all previous versions including legacy products, the stack is validating only two out of four Message Integrity Check (MIC) bytes.","status":"published","published":"2021-08-05T15:52:38Z","modified":"2024-08-04T01:23:01.303Z","updated_at":"2026-11-02T14:32:58.359368Z"}],"euvd":[{"id":"EUVD-2021-24163","description":"In version 6.5 Microchip MiWi software and all previous versions including legacy products, the stack is validating only two out of four Message Integrity Check (MIC) bytes.","status":"published","published":"2021-08-05T15:52:38Z","modified":"2024-08-04T01:23:01Z","updated_at":"2026-11-03T03:24:26.681577Z"}],"ghsa":[{"id":"GHSA-22wm-6r58-545p","title":"In the Microchip MiWi v6.5 software stack, there is a possibility of frame counters being being...","description":"In the Microchip MiWi v6.5 software stack, there is a possibility of frame counters being being validated / updated prior to message authentication.","status":"published","published":"2022-05-24T19:10:14Z","modified":"2023-01-27T05:03:19Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:42:13.302487Z"}],"nvd":[{"id":"CVE-2021-37605","description":"In version 6.5 Microchip MiWi software and all previous versions including legacy products, the stack is validating only two out of four Message Integrity Check (MIC) bytes.","status":"published","published":"2021-08-05T16:15:07.257Z","modified":"2026-06-17T04:00:49.31Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-670"],"updated_at":"2026-11-02T14:06:56.562207Z"}]}}