Security readout for executives and security teams
Plain-English summary
CVE-2022-50803 affects JM-DATA ONU JF511-TV devices using documented default credentials. An unauthenticated remote attacker could gain administrator access if the device management interface is reachable. This is business-critical for exposed devices because compromise could affect confidentiality, configuration integrity, and service availability.
Executive priority
Treat as urgent for any reachable affected device. The weakness can give administrative control without prior access, and public exploit references exist. Prioritize inventory, credential changes, and management-interface isolation.
Technical view
The issue is CWE-1392: use of default credentials. The source bundle lists JM-DATA ONU JF511-TV versions 1.0.67, 1.0.62, and 1.0.55 as affected. CVSS is 9.8, network-accessible, low complexity, no privileges, no user interaction, with high confidentiality, integrity, and availability impact.
Likely exposure
Highest exposure is internet-reachable or broadly network-reachable device administration interfaces. Internal-only exposure still matters if untrusted users, compromised hosts, or shared service networks can reach the device.
Exploitation context
CISA KEV is not listed, so active exploitation is not established here. Public exploit and advisory listings exist, including Packet Storm, which increases practical risk for exposed devices.
Researcher notes
Evidence supports a default-credential administrative access issue. The bundle does not provide confirmed vendor patch details or active exploitation evidence. Version scope includes 1.0.67, 1.0.62, and 1.0.55 in the provided affected list; validate against deployed firmware and vendor guidance.
Mitigation direction
- Inventory JM-DATA ONU JF511-TV devices and confirm firmware versions.
- Change any default administrative credentials immediately.
- Restrict management interfaces to trusted administration networks only.
- Block internet access to device administration services.
- Check JM-DATA or service-provider guidance for firmware updates or replacement direction.
- Monitor device configuration changes and unexpected administrator logins.
Validation and detection
- Confirm whether any JM-DATA ONU JF511-TV devices are deployed.
- Record firmware versions and compare against listed affected versions.
- Verify default credentials are not still active.
- Review network exposure of management interfaces.
- Check logs for successful administrative access from unexpected sources.
- Document compensating controls where vendor remediation is unavailable.
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-1392: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2022-50803 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
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- Zero Science Lab Disclosure (ZSL-2022-5708)CVE reference · third-party-advisory
- Packet Storm Security Exploit EntryCVE reference · exploit
- CXSecurity Vulnerability ListingCVE reference · third-party-advisory
- IBM X-Force Vulnerability Exchange EntryCVE reference · vdb-entry
- JM-DATA Vendor HomepageCVE reference · product
- VulnCheck Advisory: JM-DATA ONU JF511-TV 1.0.67 Default Credentials VulnerabilityCVE 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.
Use of Default Credentials
Use of Default Credentials represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.