Security readout for executives and security teams
Plain-English summary
This flaw can let an unauthenticated network attacker retrieve plain-text RTSP credentials and DVR settings from COMMAX Smart Home Ruvie CCTV Bridge DVR Service. Business risk is unauthorized camera stream access and exposure of sensitive home or building video infrastructure credentials.
Executive priority
Treat this as a high-priority IoT exposure review, especially for internet-facing or shared-network installations. The main business concern is unauthorized viewing or harvesting of camera credentials, not system takeover based on current sources.
Technical view
CVE-2021-47710 is a missing authentication issue, mapped to CWE-306. The described vulnerable endpoint exposes RTSP credentials and DVR configuration data without login. CVSS 4.0 score is 8.7 high, with network attack vector, low complexity, no privileges, and high confidentiality impact.
Likely exposure
Exposure is most relevant where COMMAX Smart Home Ruvie CCTV Bridge DVR Service is reachable over internal networks or the internet. The source bundle lists affected versions broadly, but does not provide precise firmware versions or deployment identifiers.
Exploitation context
A public Exploit-DB reference exists, so proof-of-concept information is public. The CVE is not marked in CISA KEV, and the provided sources do not state active exploitation in the wild.
Researcher notes
Evidence supports unauthenticated credential disclosure, but remediation details are incomplete in the provided sources. Affected version data is broad, and vendor-specific fixed versions are not identified. Avoid assuming active exploitation without additional evidence.
Mitigation direction
- Check COMMAX or integrator guidance for firmware updates or supported remediation.
- Remove internet exposure for affected DVR or smart home interfaces.
- Restrict access to trusted management networks or VPN-only paths.
- Rotate RTSP and DVR credentials if exposure is suspected.
- Monitor for unexpected access to DVR configuration or camera streams.
Validation and detection
- Inventory COMMAX Smart Home Ruvie CCTV Bridge DVR Service deployments.
- Confirm whether any device interface is reachable from untrusted networks.
- Review logs for unauthenticated access to the documented vulnerable endpoint.
- Verify RTSP credentials are not reused across other systems.
- Document firmware versions and compare against vendor or advisory updates.
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 lookupCVE-2021-47710 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
- 8.7 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.7HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-50208CVE reference · exploit
- COMMAX HomepageCVE reference · product
- Zero Science Lab Disclosure (ZSL-2021-5665)CVE reference · third-party-advisory
- VulnCheck Advisory: COMMAX Smart Home Ruvie CCTV Bridge DVR Service RTSP Credentials DisclosureCVE 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.