Security readout for executives and security teams
Plain-English summary
This issue affects Selea Targa IP OCR-ANPR Camera model iZero. A hidden developer function reportedly uses a hard-coded password, allowing an unauthenticated attacker to access configuration upload features and overwrite device settings. For organizations using these cameras in traffic, parking, or perimeter systems, compromise could disrupt monitoring or alter device behavior.
Executive priority
Treat as urgent for any environment using the affected camera model, especially if externally reachable. The business concern is unauthorized control or disruption of camera configuration. Prioritize exposure reduction immediately while seeking vendor-specific remediation guidance.
Technical view
CVE-2021-47731 is a network-exploitable configuration overwrite issue in Selea Targa IP OCR-ANPR Camera model iZero. The CVSS 4.0 score is 9.3. The vulnerability is described as unauthorized access through an undocumented page using a hard-coded developer password, enabling configuration upload and overwrite. CWE is listed as CWE-306.
Likely exposure
Exposure is likely limited to organizations operating Selea Targa IP OCR-ANPR Camera model iZero. Risk is highest when camera management interfaces are reachable from the internet, shared networks, or other untrusted segments. The provided data marks other products as unaffected by default unless specifically listed.
Exploitation context
The issue requires network access, no privileges, and no user interaction. Exploit-DB and third-party advisories are referenced, indicating public exploit information exists. The source bundle does not show CISA KEV listing or confirmed active exploitation, so active exploitation should not be assumed from these sources alone.
Researcher notes
Evidence supports a critical unauthenticated configuration overwrite condition with public exploit references. The provided sources do not name a specific fixed firmware or vendor mitigation. Avoid assuming broader Selea product impact beyond the listed model without confirming from vendor or advisory data.
Mitigation direction
- Identify any deployed Selea Targa IP OCR-ANPR Camera model iZero devices.
- Remove camera management interfaces from internet exposure.
- Restrict access to trusted administrative networks only.
- Segment ANPR camera networks from business and user networks.
- Review vendor guidance for firmware, configuration, or replacement recommendations.
- Monitor devices for unauthorized configuration changes.
Validation and detection
- Confirm whether model iZero exists in asset inventory.
- Check whether management interfaces are reachable from untrusted networks.
- Review device configurations for unexpected changes or uploads.
- Compare firmware and configuration status with Selea guidance.
- Check network logs for unusual administrative access attempts.
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 lookupCredential 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-2021-47731 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
- Critical
- CVSS
- 9.3 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
9.3CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-49455CVE reference · exploit
- Selea s.r.l. Product Web PageCVE reference · product
- Zero Science Lab Disclosure (ZSL-2021-5615)CVE reference · third-party-advisory
- Zero Science GitHub RepositoryCVE reference · product
- VulnCheck Advisory: Selea Targa IP Camera Developer Backdoor Configuration OverwriteCVE 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.
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.