CVE-2021-47710Public exploitNetwork attack vector

Unauthenticated RTSP credential disclosure via overview endpoint

Published Dec 9, 2025 · Updated Apr 7, 2026

Missing authentication in COMMAX Smart Home Ruvie CCTV Bridge DVR Service allows remote attackers to read RTSP credentials via HTTP. The /overview.asp handler returns a DVR list containing plaintext RTSP URLs with embedded usernames and passwords without enforcing the browser-side cookiesAuth check. No account or user interaction is required; network access to TCP port 8086 exposes DVR login material and settings but provides no reported write access.

CVSS severity8.7
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in COMMAX Smart Home Ruvie CCTV Bridge DVR Service allows remote attackers to read RTSP credentials via HTTP. The /overview.asp handler returns a DVR list containing plaintext RTSP URLs with embedded usernames and passwords without enforcing the browser-side cookiesAuth check. No account or user interaction is required; network access to TCP port 8086 exposes DVR login material and settings but provides no reported write access.

The record

CVE
CVE-2021-47710
Published
Dec 9, 2025
Updated
Apr 7, 2026
Vendor
COMMAX
Product
Smart Home Ruvie CCTV Bridge DVR Service
Classifications
CWE-306, T1552
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

COMMAX · Smart Home Ruvie CCTV Bridge DVR Serviceversion=*

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1552Unsecured Credentials

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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