Security readout for executives and security teams
Plain-English summary
CVE-2021-30349 is a Qualcomm Snapdragon vulnerability that can corrupt memory after an improper access-control sequence. It affects many Snapdragon product lines used in vehicles, compute devices, IoT, networking, wearables, and audio products. Business urgency is high where affected chips are present, but exploitation requires local, highly privileged access.
Executive priority
Treat as a high-priority hardware and firmware exposure review, not an internet-wide emergency. The main risk is affected embedded or managed devices remaining unpatched because ownership and firmware update paths are unclear.
Technical view
The issue is described as improper access control for an AC database after memory allocation, leading to possible memory corruption. CVSS 3.1 is 8.2: local attack vector, low complexity, high privileges required, no user interaction, changed scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely in organizations operating devices or embedded systems using the listed Qualcomm Snapdragon components. Confirmation requires mapping hardware models, chipsets, and OEM firmware versions against Qualcomm and device-vendor advisories.
Exploitation context
The source bundle does not cite active exploitation, and KEV is false. Exploitation is characterized as local and requiring high privileges, which lowers opportunistic remote risk but matters for post-compromise escalation or privileged local attack scenarios.
Researcher notes
Evidence is limited to the CVE metadata and Qualcomm bulletin reference. The affected product list is broad and partly truncated in the bundle. Do not assume exploit availability, exact vulnerable code paths, or universal patch coverage without vendor-specific firmware confirmation.
Mitigation direction
- Check Qualcomm April 2022 guidance for affected components and fixes.
- Obtain firmware or security updates from the device OEM.
- Prioritize automotive, IoT, networking, and managed endpoint fleets using listed chipsets.
- Limit local administrative access on affected devices where operationally possible.
- Track vendor advisories until each hardware model is dispositioned.
Validation and detection
- Inventory devices containing Qualcomm Snapdragon chipsets from the affected list.
- Compare device firmware versions against Qualcomm and OEM security bulletins.
- Verify whether OEM updates include the April 2022 Qualcomm security bulletin fixes.
- Document models with no available vendor guidance as unresolved exposure.
- Monitor vulnerability management records for false assumptions about remote exploitability.
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.
Database behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-30349 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
- High
- CVSS
- 8.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/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:C/C:H/I:H/A:H1.56Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.2HighVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.qualcomm.com/company/product-security/bulletins/april-2022-bulletinCVE reference · x_refsource_CONFIRM
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.