{"id":"CVE-2021-37604","state":"PUBLISHED","title":"In version 6.5 of Microchip MiWi software and all previous versions including legacy products, there is a possibility of frame counters being validated/updated prior to the message","description":"In version 6.5 of Microchip MiWi software and all previous versions including legacy products, there is a possibility of frame counters being validated/updated prior to the message authentication. With this vulnerability in place, an attacker may increment the incoming frame counter values by injecting messages with a sufficiently large frame counter value and invalid payload. This results in denial of service/valid packets in the network. There is also a possibility of a replay attack in the stack.","publishedAt":"2021-08-05T15:43:37.000Z","updatedAt":"2024-08-04T01:23:01.238Z","severity":null,"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["https://www.microchip.com/product-change-notifications/#/","https://www.microchip.com/en-us/products/wireless-connectivity/sub-ghz/miwi-protocol","https://ww1.microchip.com/downloads/en/DeviceDoc/asf-release-notes-3.50.0.100-readme.pdf","https://www.microchip.com/en-us/development-tools-tools-and-software/libraries-code-examples-and-more/advanced-software-framework-for-sam-devices#Downloads","https://www.microchip.com/en-us/products/wireless-connectivity/software-vulnerability-response/miwi-software-vulnerability"],"weaknesses":[],"ingestedAt":"2026-10-29T19:48:47.122Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/37xxx/CVE-2021-37604.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-37604","state":"PUBLISHED","datePublished":"2021-08-05T15:43:37.000Z","dateUpdated":"2024-08-04T01:23:01.238Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2021-07-28T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"In version 6.5 of Microchip MiWi software and all previous versions including legacy products, there is a possibility of frame counters being validated/updated prior to the message authentication. With this vulnerability in place, an attacker may increment the incoming frame counter values by injecting messages with a sufficiently large frame counter value and invalid payload. This results in denial of service/valid packets in the network. 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