Security readout for executives and security teams
Plain-English summary
This flaw affects Qualcomm Snapdragon components used in phones, compute, automotive, connectivity, and industrial IoT products. A local attacker could cause memory corruption in a DSP service, with potential loss of confidentiality, integrity, and availability. Exposure depends on whether an organization owns devices using the listed Qualcomm parts.
Executive priority
Treat this as a high-priority embedded component exposure issue, especially for fleets with mobile, automotive, or IoT devices. Business urgency depends on asset prevalence and OEM patch availability, not internet exposure alone.
Technical view
CVE-2021-35126 is a local, unauthenticated memory corruption issue in a Qualcomm DSP service caused by improper input parameter validation. CVSS 3.1 score is 8.4, with high confidentiality, integrity, and availability impact. The source bundle lists affected Snapdragon product families and chipsets but does not include CPEs or implementation-level detail.
Likely exposure
Organizations may be exposed through OEM products containing the listed Qualcomm chipsets, including Snapdragon Mobile, Compute, Auto, Connectivity, and Industrial IoT platforms. Inventory mapping is required because the source bundle does not provide CPEs or end-product model names.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The CVSS vector indicates local attack, low complexity, no privileges, and no user interaction. No public exploit status is established by the provided sources.
Researcher notes
Evidence is limited to CVE metadata, affected Qualcomm platform lists, CVSS, and the Qualcomm bulletin reference. No CWE, CPEs, proof-of-concept status, exploitation evidence, or detailed patch instructions are included in the supplied bundle.
Mitigation direction
- Map device and product inventory to the listed Qualcomm chipsets and Snapdragon product families.
- Review Qualcomm's April 2022 bulletin and OEM advisories for applicable firmware or security updates.
- Prioritize updates for mobile, automotive, compute, connectivity, and IoT assets using affected components.
- Until patched, restrict untrusted local software and reduce physical or local access where feasible.
Validation and detection
- Confirm whether managed assets contain any listed Qualcomm part numbers or Snapdragon product families.
- Check OEM firmware levels against Qualcomm's April 2022 bulletin and vendor security advisories.
- Track remediation by device model, chipset, firmware version, and business owner.
- Monitor vendor and vulnerability intelligence sources for any later exploitation evidence.
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-2021-35126 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
- 8.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/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:N/UI:N/S:U/C:H/I:H/A:H2.55.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.4HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/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.