Security readout for executives and security teams
Plain-English summary
CVE-2021-35096 is a Qualcomm Snapdragon issue that can cause affected devices to stop providing service. The public record describes a denial-of-service risk, not data theft or code execution. Because the CVSS vector is network-accessible with no authentication or user interaction, exposed affected devices deserve timely vendor patch review.
Executive priority
Treat this as a high availability risk for fleets using affected Qualcomm-based products. The business priority is identifying exposed devices and confirming OEM firmware coverage, especially for operational, mobile, automotive, or IoT environments where downtime is costly.
Technical view
The issue is improper memory allocation during counter check DLM handling in multiple Snapdragon product families. CVSS 3.1 is 7.5: network attack vector, low complexity, no privileges, no user interaction, unchanged scope, and high availability impact only.
Likely exposure
Exposure is tied to devices using the listed Qualcomm Snapdragon Auto, Compute, Connectivity, Industrial IoT, and Mobile components. Organizations should identify products containing the named chipsets or modules and then rely on OEM firmware or security bulletins for practical patch applicability.
Exploitation context
The provided sources do not show CISA KEV listing or other cited evidence of active exploitation. The record supports potential unauthenticated network denial of service, but does not provide exploit details, observed attacks, or affected deployment conditions.
Researcher notes
Public details are limited to a memory-allocation flaw in DLM counter-check handling with availability impact. No CWE, exploit narrative, proof of concept, or patch mechanics are provided in the source bundle. Product validation depends on chipset-to-device mapping and OEM update information.
Mitigation direction
- Review Qualcomm's May 2022 security bulletin for CVE-2021-35096 applicability.
- Check device and OEM advisories for firmware updates that include this Qualcomm fix.
- Prioritize mission-critical, externally reachable, and hard-to-reboot affected devices.
- Reduce unnecessary network exposure where updates are unavailable or delayed.
- Monitor affected device classes for unexplained availability loss or reboot patterns.
Validation and detection
- Inventory assets using the affected Qualcomm Snapdragon components listed in the CVE record.
- Map each device model to its OEM firmware and security bulletin status.
- Confirm whether installed firmware includes the relevant Qualcomm May 2022 security updates.
- Document devices with no available vendor fix and compensating exposure controls.
- Track Qualcomm, OEM, and CVE updates for revised affected-product information.
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-2021-35096 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.