{"cve":"CVE-2021-1956","nvd":{"published":"2021-09-09T08:15:22.867","modified":"2026-06-17T03:33:01.110","status":"Modified","description":"Improper handling of ASB-U packet with L2CAP channel ID by slave host can lead to interference with piconet in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":[],"references":["https://www.qualcomm.com/company/product-security/bulletins/september-2021-bulletin","https://www.qualcomm.com/company/product-security/bulletins/september-2021-bulletin"],"products":["qualcomm:aqt1000_firmware","qualcomm:ar8035_firmware","qualcomm:csrb31024_firmware","qualcomm:qca6175a_firmware","qualcomm:qca6390_firmware","qualcomm:qca6391_firmware","qualcomm:qca6420_firmware","qualcomm:qca6430_firmware","qualcomm:qca6564a_firmware","qualcomm:qca6564au_firmware","qualcomm:qca6574_firmware","qualcomm:qca6574a_firmware","qualcomm:qca6574au_firmware","qualcomm:qca6584au_firmware","qualcomm:qca6595_firmware","qualcomm:qca6595au_firmware","qualcomm:qca6696_firmware","qualcomm:qca8337_firmware","qualcomm:qcn7605_firmware","qualcomm:qcn7606_firmware","qualcomm:qcx315_firmware","qualcomm:sa415m_firmware","qualcomm:sa515m_firmware","qualcomm:sa6145p_firmware","qualcomm:sa6150p_firmware","qualcomm:sa6155_firmware","qualcomm:sa6155p_firmware","qualcomm:sa8145p_firmware","qualcomm:sa8150p_firmware","qualcomm:sa8155_firmware","qualcomm:sa8155p_firmware","qualcomm:sa8195p_firmware","qualcomm:sc8180x\\+sdx55_firmware","qualcomm:sd_8c_firmware","qualcomm:sd_8cx_firmware","qualcomm:sdx55_firmware","qualcomm:wcd9340_firmware","qualcomm:wcd9341_firmware","qualcomm:wcd9360_firmware","qualcomm:wcn3998_firmware","qualcomm:wsa8810_firmware","qualcomm:wsa8815_firmware"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-1956","score":0.00233,"percentile":0.14228,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}