Security readout for executives and security teams
Plain-English summary
CVE-2016-4783 affects old Lenovo SHAREit for Android. The issue could let a remote attacker inject web script or HTML into the app context. Business risk is mainly legacy mobile exposure: devices still running SHAREit before 3.5.98_ww on Android before 4.4 should be treated as suspect until upgraded or removed.
Executive priority
Treat this as a legacy mobile hygiene issue rather than an emergency, unless SHAREit is still deployed on business devices. The priority is finding old installations and removing or upgrading them.
Technical view
The CVE describes a cross-site scripting issue, specifically labeled Universal XSS, in Lenovo SHAREit before 3.5.98_ww on Android before 4.4. The public record says remote attackers can inject arbitrary web script or HTML through unspecified vectors. No CVSS, CWE, exploit details, or detailed affected CPEs are provided in the supplied bundle.
Likely exposure
Exposure is likely limited to legacy Android devices running Lenovo SHAREit earlier than 3.5.98_ww, especially Android versions before 4.4. Organizations without mobile app inventory may have low visibility into this risk.
Exploitation context
The supplied sources do not support active exploitation. CISA KEV status is false, and the CVE description does not provide exploit mechanics. It only states that remote attackers could inject script or HTML through unspecified vectors.
Researcher notes
The record is sparse: vectors are unspecified, severity is not scored, and affected CPE data is not populated. Analysis should avoid assumptions beyond Lenovo SHAREit before 3.5.98_ww on Android before 4.4 and the stated UXSS behavior.
Mitigation direction
- Inventory Android devices for installed SHAREit versions.
- Upgrade SHAREit to 3.5.98_ww or later where vendor-supported.
- Remove SHAREit from managed devices if no business need remains.
- Check Lenovo advisory LEN-6421 for vendor-specific guidance.
- Prioritize legacy Android devices below version 4.4.
Validation and detection
- Confirm whether SHAREit is installed on managed Android devices.
- Record SHAREit version and Android OS version for each device.
- Flag SHAREit versions earlier than 3.5.98_ww.
- Verify remediation by rechecking app inventory after update or removal.
- Document any unmanaged or unsupported 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
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ATT&CK lookup starting points
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CVE-2016-4783 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://support.lenovo.com/us/en/product_security/len_6421CVE 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.