{"id":"CVE-2025-2329","aliases":["EUVD-2025-22722","GHSA-q46p-vh9h-4p2c"],"status":"published","title":"High traffic causes corrupt SPI packets in OpenThread leading to denial of service","description":"In high traffic environments, a Silicon Labs OpenThread RCP (see impacted versions) fails to clear the SPI transmit buffer and may send a corrupt packet over SPI to its host,  causing the host to reset the RCP which results in a denial of service.","severity":{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.0025,"percentile":0.164,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-908"],"published":"2025-07-25T15:49:40Z","modified":"2026-06-17T09:06:45Z","products":[{"vendor":"silabs.com","product":"openthread"},{"vendor":"the openthread authors","product":"openthread"}],"references":[{"url":"https://github.com/SiliconLabs/simplicity_sdk/releases","tags":["release-notes"]},{"url":"https://github.com/SiliconLabs/gecko_sdk/releases","tags":["release-notes"]},{"url":"https://community.silabs.com/069Vm00000SNyueIAD","tags":["vendor-advisory","permissions-required"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-2329"},{"url":"https://github.com/advisories/GHSA-q46p-vh9h-4p2c"}],"sources":{"cve":[{"id":"CVE-2025-2329","title":"High traffic causes corrupt SPI packets in OpenThread leading to denial of service","description":"In high traffic environments, a Silicon Labs OpenThread RCP (see impacted versions) fails to clear the SPI transmit buffer and may send a corrupt packet over SPI to its host,  causing the host to reset the RCP which results in a denial of service.","status":"published","published":"2025-07-25T15:49:40.236Z","modified":"2025-08-04T18:31:49.556Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T14:32:39.039362Z"}],"euvd":[{"id":"EUVD-2025-22722","description":"In high traffic environments, a Silicon Labs OpenThread RCP (see impacted versions) fails to clear the SPI transmit buffer and may send a corrupt packet over SPI to its host,  causing the host to reset the RCP which results in a denial of service.","status":"published","published":"2025-07-25T15:49:40Z","modified":"2025-08-04T18:31:49Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T20:32:01.599514Z"}],"ghsa":[{"id":"GHSA-q46p-vh9h-4p2c","title":"In high traffic environments, a Silicon Labs OpenThread RCP (see impacted versions) fails to...","description":"In high traffic environments, a Silicon Labs OpenThread RCP (see impacted versions) fails to clear the SPI transmit buffer and may send a corrupt packet over SPI to its host,  causing the host to reset the RCP which results in a denial of service.","status":"published","published":"2025-07-25T18:30:38Z","modified":"2025-07-25T18:30:47Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T15:03:07.428711Z"}],"nvd":[{"id":"CVE-2025-2329","description":"In high traffic environments, a Silicon Labs OpenThread RCP (see impacted versions) fails to clear the SPI transmit buffer and may send a corrupt packet over SPI to its host,  causing the host to reset the RCP which results in a denial of service.","status":"published","published":"2025-07-25T16:15:28.163Z","modified":"2026-06-17T09:06:45.96Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T14:11:21.132141Z"}]}}