{"cve":"CVE-2021-1921","nvd":{"published":"2021-11-12T07:15:06.960","modified":"2026-06-17T03:32:52.540","status":"Modified","description":"Possible memory corruption due to Improper handling of hypervisor unmap operations for concurrent memory operations in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.0},"cwes":["CWE-367"],"references":["https://www.qualcomm.com/company/product-security/bulletins/november-2021-bulletin","https://www.qualcomm.com/company/product-security/bulletins/november-2021-bulletin"],"products":["qualcomm:aqt1000_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:qca6574au_firmware","qualcomm:qca6595_firmware","qualcomm:qcm6490_firmware","qualcomm:qcs6490_firmware","qualcomm:qrb5165_firmware","qualcomm:qrb5165n_firmware","qualcomm:qsm8350_firmware","qualcomm:sa6155p_firmware","qualcomm:sa8195p_firmware","qualcomm:sd675_firmware","qualcomm:sd778g_firmware","qualcomm:sd780g_firmware","qualcomm:sd855_firmware","qualcomm:sd865_5g_firmware","qualcomm:sd870_firmware","qualcomm:sd888_5g_firmware","qualcomm:sd_8c_firmware","qualcomm:sd_8cx_firmware","qualcomm:sdm830_firmware","qualcomm:sdx24_firmware","qualcomm:sdx55_firmware","qualcomm:sdx55m_firmware","qualcomm:sdxr2_5g_firmware","qualcomm:sm7325_firmware","qualcomm:wcd9340_firmware","qualcomm:wcd9341_firmware","qualcomm:wcd9360_firmware","qualcomm:wcd9370_firmware","qualcomm:wcd9375_firmware","qualcomm:wcd9380_firmware","qualcomm:wcd9385_firmware","qualcomm:wcn3950_firmware","qualcomm:wcn3980_firmware","qualcomm:wcn3990_firmware","qualcomm:wcn3998_firmware","qualcomm:wcn6740_firmware","qualcomm:wcn6750_firmware","qualcomm:wcn6850_firmware","qualcomm:wcn6851_firmware","qualcomm:wcn6855_firmware","qualcomm:wcn6856_firmware"],"source":"nvd","synced_at":"2026-10-19T21:24:39.218183596+00:00"},"epss":{"cve":"CVE-2021-1921","score":0.00107,"percentile":0.01158,"date":"2026-11-01"},"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."]}