Security readout for executives and security teams
Plain-English summary
This issue affects vivo Framework on older vivo device software. Weak framework service permissions could expose some sensitive device information. The public record rates it medium severity and does not show confirmed active exploitation.
Executive priority
Treat this as a fleet hygiene and data-exposure issue, not an emergency based on current evidence. Prioritize if vivo devices are used for sensitive business, regulated, or executive workflows.
Technical view
CVE-2020-12491 is an improper permission-control issue in vivo Framework, mapped to CWE-306. Affected scope is listed as ard11 and below versions released before 2022-02-24. CVSS 4.0 is 4.8 with local access, low complexity, no privileges, user interaction, and low confidentiality impact.
Likely exposure
Exposure is most likely in fleets containing vivo devices running Framework ard11 or below from before 2022-02-24. Organizations without vivo devices, or with versions outside the affected range, are not indicated as affected by the provided sources.
Exploitation context
The source bundle does not indicate CISA KEV listing or active exploitation. The CVSS vector suggests exploitation is local and requires user interaction, with information disclosure rather than integrity or availability impact.
Researcher notes
The public details are sparse. Validate exposure through device inventory and vendor version mapping. Avoid assuming broader Android impact or exploit availability; the cited scope is specific to vivo Framework versions described in the record.
Mitigation direction
- Check the vivo advisory for product-specific update guidance.
- Update affected vivo devices to releases outside the listed affected range.
- Remove unsupported affected devices from sensitive workflows.
- Use MDM inventory to prioritize devices handling regulated or confidential data.
Validation and detection
- Inventory vivo devices and record OS/framework version and release date.
- Compare each device against ard11 and pre-2022-02-24 affected scope.
- Confirm updated devices are outside the affected version range.
- Track exceptions where devices cannot receive vendor updates.
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-306: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. 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-2020-12491 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
- Medium
- CVSS
- 4.8 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
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:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
4.8MediumVector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.vivo.com/en/support/security-advisory-detail?id=11CVE reference
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.
Missing Authentication for Critical Function
Missing Authentication for Critical Function represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.