{"id":"CVE-2021-30307","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-30307","generatedAt":"2026-10-28T06:50:08.540Z","title":"Possible denial of service due to improper validation of DNS response when DNS client requests with PTR, NAPTR or SRV query type in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT","description":"Possible denial of service due to improper validation of DNS response when DNS client requests with PTR, NAPTR or SRV query type in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT","published":"2022-01-13T12:15:08.000Z","lastModified":"2026-06-17T03:50:06.000Z","status":"Modified","sourceIdentifier":"product-security@qualcomm.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-617"],"affected":["qualcomm/ar8035 firmware","qualcomm/csrb31024 firmware","qualcomm/qca6174a firmware","qualcomm/qca6390 firmware","qualcomm/qca6391 firmware","qualcomm/qca6426 firmware","qualcomm/qca6436 firmware","qualcomm/qca6564au firmware","qualcomm/qca6574a firmware","qualcomm/qca6574au firmware","qualcomm/qca6595au firmware","qualcomm/qca6696 firmware","qualcomm/qca8081 firmware","qualcomm/qca8337 firmware","qualcomm/qca9377 firmware","qualcomm/qcm2290 firmware","qualcomm/qcm4290 firmware","qualcomm/qcm6490 firmware","qualcomm/qcs2290 firmware","qualcomm/qcs410 firmware","qualcomm/qcs4290 firmware","qualcomm/qcs610 firmware","qualcomm/qcs6490 firmware","qualcomm/qcx315 firmware","qualcomm/sa415m firmware","qualcomm/sa515m firmware","qualcomm/sa6145p firmware","qualcomm/sa6150p firmware","qualcomm/sa6155p firmware","qualcomm/sa8145p firmware","qualcomm/sa8150p firmware","qualcomm/sa8155p firmware","qualcomm/sa8195p firmware","qualcomm/sd 675 firmware","qualcomm/sd 8 gen1 5g firmware","qualcomm/sd 8cx gen2 firmware","qualcomm/sd460 firmware","qualcomm/sd480 firmware","qualcomm/sd662 firmware","qualcomm/sd665 firmware","qualcomm/sd675 firmware","qualcomm/sd678 firmware","qualcomm/sd690 5g firmware","qualcomm/sd720g firmware","qualcomm/sd730 firmware","qualcomm/sd750g firmware","qualcomm/sd765 firmware","qualcomm/sd765g firmware","qualcomm/sd768g firmware","qualcomm/sd778g firmware","qualcomm/sd7c firmware","qualcomm/sd865 5g firmware","qualcomm/sd870 firmware","qualcomm/sd888 firmware","qualcomm/sd888 5g firmware","qualcomm/sdx24 firmware","qualcomm/sdx55 firmware","qualcomm/sdx55m firmware","qualcomm/sdx65 firmware","qualcomm/sdxr2 5g firmware"],"epss":{"score":0.00568,"percentile":0.46902,"date":"2026-10-27","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 (0.57%). 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/january-2022-bulletin","tags":["Vendor Advisory"],"source":"product-security@qualcomm.com"},{"url":"https://www.qualcomm.com/company/product-security/bulletins/january-2022-bulletin","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-30307","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."}