Security readout for executives and security teams
Plain-English summary
CVE-2021-35073 affects multiple Qualcomm Snapdragon platforms. The issue can trigger an assertion because a rank restriction field is not properly validated. The published impact is availability only: affected devices or components may be disrupted, with no stated confidentiality or integrity impact.
Executive priority
Treat as a high-priority availability risk for affected Qualcomm-based fleets, especially operational, IoT, automotive, and mobile environments. Urgency depends on whether your vendors shipped firmware updates and whether affected devices are remotely reachable or business-critical.
Technical view
The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, scoring 7.5. Sources describe improper validation leading to a possible assertion across listed Snapdragon Auto, Compute, Connectivity, Industrial IoT, and Mobile products. The bundle does not identify a CWE, vulnerable protocol, or exploit mechanics.
Likely exposure
Exposure is most likely in devices using the listed Qualcomm chipsets, including mobile, IoT, auto, connectivity, and compute platforms. Organizations usually inherit this risk through OEM firmware, carrier builds, embedded modules, or managed device fleets rather than application code.
Exploitation context
The CVSS vector indicates network reachability, low attack complexity, no privileges, and no user interaction. The provided sources do not state active exploitation, public exploit availability, or inclusion in CISA KEV; KEV is marked false.
Researcher notes
Evidence is limited to Qualcomm/CVE summary data and CVSS. The source bundle does not name the exact component, packet path, CWE, patch details, or exploit status. Avoid assuming impact beyond denial of service unless vendor advisories provide more detail.
Mitigation direction
- Inventory devices and modules using listed Qualcomm parts.
- Check Qualcomm and OEM guidance for CVE-2021-35073 remediation.
- Apply OEM firmware or security updates that address this CVE.
- Prioritize network-exposed, safety-sensitive, and fleet-managed devices.
- Track unsupported devices for replacement or compensating controls.
Validation and detection
- Map device models to Qualcomm chipset identifiers.
- Compare firmware levels against OEM advisories for CVE-2021-35073.
- Confirm whether vendor updates reference Qualcomm May 2022 bulletin fixes.
- Review asset exposure where affected radios or modules are reachable.
- Document devices with no available vendor remediation path.
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-2021-35073 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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.qualcomm.com/company/product-security/bulletins/may-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.