CVE intelligence and bounded remediation

CVE-2021-30312 — Qualcomm Apq8053 Firmware security vulnerability

High CVSS 7.5

Improper authentication of sub-frames of a multicast AMSDU frame can lead to information disclosure in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking

Severity
High
CVSS
7.5 (3.1)
Published
2021-10-20
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-287

Affected products

  • qualcomm / apq8053_firmware
  • qualcomm / aqt1000_firmware
  • qualcomm / ar8031_firmware
  • qualcomm / ar8035_firmware
  • qualcomm / ar9380_firmware
  • qualcomm / csr8811_firmware

Showing 6 representative product identities from 194 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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