Security readout for executives and security teams
Plain-English summary
CVE-2021-47921 is a directory traversal flaw in Free Photo & Video Vault - WiFi Transfer version 0.0.2. A remote attacker could manipulate web requests to read sensitive files or environment data from the system. Business urgency is highest where this app is installed and its WiFi transfer web interface is reachable.
Executive priority
Prioritize investigation if the app exists in managed mobile fleets or sensitive environments. The main risk is unauthorized disclosure of local files or environment information. If the app is not installed, business risk is low. If installed, remove or restrict use until vendor remediation is verified.
Technical view
The issue is CWE-22 path traversal in Free Photo & Video Vault 0.0.2. Public descriptions say crafted application path requests can access unauthorized system paths and sensitive system files. CVSS v4.0 is 7.1 high: network attack, low complexity, no user interaction, high confidentiality impact, no integrity or availability impact.
Likely exposure
Exposure appears limited to devices running Free Photo & Video Vault - WiFi Transfer 0.0.2 with the vulnerable web request functionality reachable. The CVE record lists other versions as unaffected by default. Enterprise exposure depends on whether managed or personal devices use this app on trusted networks.
Exploitation context
The source bundle includes a Vulnerability Lab advisory tagged as exploit, but it does not show confirmed active exploitation. CISA KEV status is false. Treat this as publicly documented and potentially testable, not as known exploited in the wild based on the provided sources.
Researcher notes
Sources identify CWE-22 and high confidentiality impact only. There is a small evidence conflict: the description says exploitation without privileges, while the CVSS vector shows PR:L. No patch details are provided in the source bundle. Avoid assuming affected platforms beyond the named app and version.
Mitigation direction
- Identify any devices with Free Photo & Video Vault - WiFi Transfer 0.0.2 installed.
- Check the App Store, CVE, VulnCheck, and vendor guidance for updates or removal advice.
- Disable or avoid using the WiFi transfer web feature until guidance is confirmed.
- Remove the app from managed devices if no fixed version or business need exists.
- Restrict device exposure to untrusted networks where the transfer interface may be reachable.
Validation and detection
- Review mobile device inventory for the exact affected app and version 0.0.2.
- Confirm whether the app’s WiFi transfer or web request feature is enabled.
- Check whether reachable networks could access the app’s transfer interface.
- Review relevant device or network logs for unusual file access request patterns.
- Track CVE and advisory updates for clarified fixes or affected-version changes.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-47921 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
- 7.1 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/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:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
7.1HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- Vulnerability Lab AdvisoryCVE reference · exploit
- Product HomepageCVE reference · product
- VulnCheck Advisory: Free Photo & Video Vault 0.0.2 Directory Traversal Vulnerability via Web RequestCVE reference · third-party-advisory
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 Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.