Security readout for executives and security teams
Plain-English summary
Lenovo Connect2 could store the temporary ad-hoc file-sharing password where a normal user could read it. Someone who already has read access to the user’s contents could use that password to join the Connect2 hotspot and view files while they are being transferred.
Executive priority
Treat this as a targeted data-exposure risk rather than an internet-wide emergency. Prioritize removal or upgrade of legacy Connect2 where sensitive files are transferred or where shared devices increase local access risk.
Technical view
CVE-2017-3742 affects Lenovo Connect2 before 4.2.5.4885 on Windows and 4.2.5.3071 on Android. The issue is insecure storage of the ad-hoc connection password during file sharing, enabling an attacker with read access to user contents to connect and observe in-transit file contents.
Likely exposure
Exposure is likely limited to legacy Lenovo Connect2 installations below the fixed Windows or Android versions, especially where users still rely on ad-hoc Connect2 file transfers.
Exploitation context
The source bundle does not report active exploitation, and the CVE is not listed as KEV. Exploitation requires prior read access to the user’s contents and an opportunity to access the Connect2 hotspot during transfers.
Researcher notes
The bundle provides no CVSS, CWE, or detailed file path evidence. Analysis should stay bounded to insecure password storage and transfer observation under a local-read-access prerequisite. Do not assume remote exploitation without that prerequisite.
Mitigation direction
- Upgrade Lenovo Connect2 to the fixed Windows or Android version, or later.
- Remove or disable Lenovo Connect2 where it is no longer required.
- Avoid ad-hoc Connect2 file transfers until affected clients are remediated.
- Review Lenovo advisory LEN-14398 for vendor-specific guidance.
Validation and detection
- Inventory Windows and Android endpoints for Lenovo Connect2 installations.
- Confirm versions are at least 4.2.5.4885 on Windows and 4.2.5.3071 on Android.
- Identify users or workflows still using Connect2 ad-hoc file sharing.
- Check whether affected systems allow unnecessary user-profile read access.
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
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Credential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2017-3742 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-14398CVE 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.