Security readout for executives and security teams
Plain-English summary
This is a Qualcomm Snapdragon audio-module flaw where bad input may let a privileged local actor access memory outside intended bounds. Business urgency is moderate: exploitation needs high local privileges, but successful exploitation could affect confidentiality, integrity, and availability on affected devices.
Executive priority
Treat as a moderate-priority firmware supply-chain issue. The privilege requirement reduces emergency urgency, but broad Qualcomm component coverage and high potential impact justify inventory checks and vendor patch confirmation.
Technical view
CVE-2021-30299 is CWE-20 improper input validation in Qualcomm Snapdragon audio. The CVSS 3.1 vector is AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H, score 6.7. The record lists many Snapdragon and Qualcomm component identifiers, with no CPEs provided.
Likely exposure
Exposure is most likely in phones, embedded, automotive, IoT, or edge systems using the listed Qualcomm Snapdragon or related components and vulnerable firmware. The provided data does not identify specific OEM device models or firmware builds.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Attack prerequisites are local access and high privileges, with no user interaction required. The CVSS impact ratings are high across confidentiality, integrity, and availability.
Researcher notes
Public detail is sparse: the record names an audio input-validation issue and possible out-of-bound access, but does not provide CPEs, OEM model mapping, exploit status, or low-level root cause details. Avoid assuming affected end products without firmware or vendor confirmation.
Mitigation direction
- Check Qualcomm’s March 2022 security bulletin and relevant OEM advisories.
- Apply OEM firmware or security updates that include the Qualcomm fix.
- Inventory products using listed Qualcomm Snapdragon or related components.
- Request vendor attestation for managed embedded, automotive, or IoT devices.
- Monitor Qualcomm and OEM advisories for device-specific remediation details.
Validation and detection
- Map hardware BOMs and firmware inventories against the listed affected components.
- Confirm whether OEM firmware references CVE-2021-30299 or Qualcomm March 2022 fixes.
- Prioritize assets where local privileged code execution is plausible.
- Track devices with no available OEM update as residual risk.
- Document unsupported affected devices for replacement or compensating controls.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-20: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-30299 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H0.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.7MediumVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.