Security readout for executives and security teams
Plain-English summary
This Qualcomm Snapdragon flaw can let a local, low-privileged application trigger memory corruption after requesting an extremely large memory allocation. Because CISA lists CVE-2020-11261 in KEV, treat it as exploited in the wild. Business risk is highest for managed mobile, IoT, automotive, wearable, and connected devices that still run affected Snapdragon firmware.
Executive priority
Prioritize remediation for managed mobile, IoT, automotive, and connected-device fleets because CISA KEV confirms real-world exploitation. The practical question is whether OEM firmware is current on Snapdragon-based assets, especially devices that can run local applications.
Technical view
CVE-2020-11261 is CWE-20 improper input validation in Qualcomm Snapdragon platforms. The vulnerable condition occurs when a user application requests a huge memory allocation and error handling is insufficient, causing memory corruption. CVSS 3.1 is 7.8: local access, low privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure depends on device hardware and firmware, not a single application package. The source bundle lists many Snapdragon Auto, Compute, Connectivity, Consumer IoT, Industrial IoT, Mobile, Voice & Music, and Wearables products, with the exact chipset list partially truncated.
Exploitation context
Active exploitation is supported by the CISA KEV listing. The provided sources do not include exploit details, affected operating-system versions, or public weaponization guidance. CVSS indicates exploitation requires local access with low privileges and no user interaction.
Researcher notes
The source bundle supports impact, CVSS, broad Qualcomm product families, and KEV status. It does not provide root-cause detail beyond memory allocation error handling, complete affected CPEs, exploit indicators, or precise patch identifiers. Validate exposure through Qualcomm and OEM firmware advisories.
Mitigation direction
- Apply Qualcomm or OEM firmware updates tied to the January 2021 bulletin.
- Prioritize devices that allow third-party or sideloaded local applications.
- Restrict untrusted local app installation until affected devices are patched.
- Check OEM advisories for exact chipset and device model coverage.
- Isolate or replace unsupported affected devices where updates are unavailable.
Validation and detection
- Inventory devices using Qualcomm Snapdragon chipsets listed in the bulletin.
- Map each device model to its OEM firmware and security patch level.
- Confirm whether CVE-2020-11261 is addressed by the installed firmware.
- Review CISA KEV tracking for operational prioritization requirements.
- Document unsupported or unpatchable devices as residual risk.
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.
CWE-20: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-11261 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
- 7.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/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.
CISA KEV status
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:L/UI:N/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/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/january-2021-bulletinCVE reference · x_refsource_CONFIRM
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-11261CVE reference · government-resource
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.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.