Security readout for executives and security teams
Plain-English summary
CVE-2021-26279 affects vivo's Weather app before version 6.0.3.1. Some weather module parameters are stored improperly, which can expose sensitive information. The issue is not described as remotely exploitable in the supplied sources, but it has high confidentiality impact where affected devices remain in use.
Executive priority
Treat this as a targeted privacy and confidentiality issue, not an emergency internet-wide threat. Patch affected vivo devices during normal mobile security cycles, with faster action for executives, sensitive teams, or regulated environments.
Technical view
The vulnerability is an information disclosure issue classified as CWE-200 in vivo Weather versions earlier than 6.0.3.1. CVSS 3.1 is 5.9 with local attack vector, low complexity, low privileges, required user interaction, changed scope, and high confidentiality impact.
Likely exposure
Exposure is likely limited to vivo devices running the Weather module earlier than 6.0.3.1. Organizations should focus on managed mobile fleets, BYOD inventories, and users in roles where leaked device or location-adjacent information could carry privacy or operational risk.
Exploitation context
The supplied data does not show CISA KEV listing or active exploitation. The CVSS vector indicates local access, low privileges, and user interaction are required. No public exploit details or attack procedure are provided in the source bundle.
Researcher notes
Evidence is sparse. Sources identify improper storage of Weather module parameters but do not name the parameters, storage location, exploit primitives, or detailed remediation path. Avoid assuming broader vivo app or OS impact beyond Weather versions earlier than 6.0.3.1.
Mitigation direction
- Update vivo Weather to version 6.0.3.1 or later where available.
- Check vivo's advisory for device-specific update guidance.
- Prioritize managed vivo devices used by high-risk staff.
- Restrict use of affected versions until updates are confirmed.
- Document exceptions for devices that cannot receive the update.
Validation and detection
- Inventory vivo devices and installed Weather app versions.
- Confirm affected devices are below version 6.0.3.1.
- Verify updated devices report Weather version 6.0.3.1 or later.
- Review MDM or endpoint records for unmanaged vivo devices.
- Track remediation status for BYOD devices separately.
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-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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-2021-26279 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:N/A: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:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N1.54Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.vivo.com/en/support/security-advisory-detail?id=10CVE 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.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.