{"id":"CVE-2021-1919","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-1919","generatedAt":"2026-10-27T22:31:59.403Z","title":"Integer underflow can occur when the RTCP length is lesser than than the actual blocks present in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Voice & Music,…","description":"Integer underflow can occur when the RTCP length is lesser than than the actual blocks present in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Voice & Music, Snapdragon Wearables","published":"2021-09-08T12:15:08.000Z","lastModified":"2026-06-17T03:32:52.000Z","status":"Modified","sourceIdentifier":"product-security@qualcomm.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-191"],"affected":["qualcomm/apq8009 firmware","qualcomm/apq8009w firmware","qualcomm/apq8017 firmware","qualcomm/apq8037 firmware","qualcomm/apq8053 firmware","qualcomm/apq8084 firmware","qualcomm/apq8096au firmware","qualcomm/aqt1000 firmware","qualcomm/csr6030 firmware","qualcomm/csrb31024 firmware","qualcomm/mdm8207 firmware","qualcomm/mdm9150 firmware","qualcomm/mdm9206 firmware","qualcomm/mdm9207 firmware","qualcomm/mdm9250 firmware","qualcomm/mdm9607 firmware","qualcomm/mdm9625 firmware","qualcomm/mdm9628 firmware","qualcomm/mdm9635m firmware","qualcomm/mdm9640 firmware","qualcomm/mdm9645 firmware","qualcomm/mdm9650 firmware","qualcomm/mdm9655 firmware","qualcomm/msm8108 firmware","qualcomm/msm8208 firmware","qualcomm/msm8209 firmware","qualcomm/msm8608 firmware","qualcomm/msm8909w firmware","qualcomm/msm8917 firmware","qualcomm/msm8920 firmware","qualcomm/msm8937 firmware","qualcomm/msm8940 firmware","qualcomm/msm8953 firmware","qualcomm/msm8976 firmware","qualcomm/msm8976sg firmware","qualcomm/msm8996au firmware","qualcomm/qca6174a firmware","qualcomm/qca6310 firmware","qualcomm/qca6320 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/qca6564a firmware","qualcomm/qca6564au firmware","qualcomm/qca6574 firmware","qualcomm/qca6574a firmware","qualcomm/qca6574au firmware","qualcomm/qca6584au firmware","qualcomm/qca6595au firmware","qualcomm/qca6694 firmware","qualcomm/qca6694au firmware","qualcomm/qca6696 firmware","qualcomm/qca9367 firmware","qualcomm/qca9377 firmware"],"epss":{"score":0.00796,"percentile":0.56188,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.qualcomm.com/company/product-security/bulletins/august-2021-bulletin","tags":["Vendor Advisory"],"source":"product-security@qualcomm.com"},{"url":"https://www.qualcomm.com/company/product-security/bulletins/august-2021-bulletin","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-1919","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}