Security readout for executives and security teams
Plain-English summary
CVE-2021-30327 is a Qualcomm Snapdragon flaw where malformed Sahara protocol command handling can overwrite secure configuration data. The business concern is device integrity and confidentiality on affected Snapdragon-based products, but the CVSS vector requires physical access, limiting remote-scale risk.
Executive priority
Treat as high priority for affected hardware fleets, especially where devices are physically accessible or hold sensitive data. It is not currently evidenced as remotely exploitable or actively exploited in the provided sources, so urgency should be driven by asset exposure and firmware availability.
Technical view
The CVE describes a buffer overflow in Sahara protocol command processing affecting multiple Qualcomm Snapdragon Mobile, Compute, Auto, IoT, Connectivity, and Voice & Music chipsets. CVSS 3.1 is 7.5 with physical attack vector, no privileges, no user interaction, changed scope, high confidentiality and integrity impact, and low availability impact.
Likely exposure
Exposure is likely limited to devices containing the listed Qualcomm chipsets and firmware paths that expose Sahara protocol processing. Impacted areas may include mobile devices, embedded systems, automotive platforms, IoT, connectivity modules, and voice/music devices using affected Snapdragon components.
Exploitation context
The provided sources do not report active exploitation, and this CVE is not marked as CISA KEV. The CVSS vector indicates physical access is required, so risk is highest for devices accessible to attackers, repair channels, shared labs, resale flows, or exposed embedded deployments.
Researcher notes
Evidence is limited to the CVE record, CVE List entry, and Qualcomm bulletin reference. No CWE, exploit details, or specific OEM patch mapping are provided in the bundle. Avoid assuming product-level exposure without confirming chipset and firmware lineage.
Mitigation direction
- Review Qualcomm's April 2022 security bulletin for vendor guidance.
- Request firmware or security updates from the device OEM.
- Prioritize affected devices with physical exposure or sensitive data roles.
- Limit untrusted physical access to affected devices and debug interfaces.
- Track unsupported affected models for replacement or compensating controls.
Validation and detection
- Inventory devices using the listed Qualcomm Snapdragon chipsets.
- Map device models to OEM firmware and security bulletin levels.
- Confirm whether Qualcomm April 2022 fixes are included by the OEM.
- Check for affected devices in labs, fleets, field deployments, and spare stock.
- Document exceptions where vendor remediation is unavailable.
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.
CVE-2021-30327 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
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
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:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L0.96Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
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.