{"cve":"CVE-2021-1939","nvd":{"published":"2021-09-17T07:15:08.757","modified":"2026-06-17T03:32:57.160","status":"Modified","description":"Null pointer dereference occurs due to improper validation when the preemption feature enablement is toggled in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Wearables","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://www.qualcomm.com/company/product-security/bulletins/august-2021-bulletin","https://www.qualcomm.com/company/product-security/bulletins/august-2021-bulletin"],"products":["qualcomm:apq8009_firmware","qualcomm:apq8009w_firmware","qualcomm:apq8017_firmware","qualcomm:apq8053_firmware","qualcomm:aqt1000_firmware","qualcomm:msm8909w_firmware","qualcomm:msm8917_firmware","qualcomm:msm8953_firmware","qualcomm:qca4020_firmware","qualcomm:qca6174a_firmware","qualcomm:qca6310_firmware","qualcomm:qca6335_firmware","qualcomm:qca6390_firmware","qualcomm:qca6391_firmware","qualcomm:qca6420_firmware","qualcomm:qca6421_firmware","qualcomm:qca6426_firmware","qualcomm:qca6430_firmware","qualcomm:qca6431_firmware","qualcomm:qca6436_firmware","qualcomm:qca6574_firmware","qualcomm:qca6574a_firmware","qualcomm:qca6574au_firmware","qualcomm:qca6595au_firmware","qualcomm:qca6696_firmware","qualcomm:qca9377_firmware","qualcomm:qca9379_firmware","qualcomm:qcs603_firmware","qualcomm:qcs605_firmware","qualcomm:qet4101_firmware","qualcomm:qsm8250_firmware","qualcomm:qsw8573_firmware","qualcomm:qualcomm215_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:sd205_firmware","qualcomm:sd210_firmware","qualcomm:sd429_firmware","qualcomm:sd439_firmware","qualcomm:sd450_firmware","qualcomm:sd480_firmware","qualcomm:sd632_firmware","qualcomm:sd665_firmware"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-1939","score":0.00139,"percentile":0.03264,"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."]}