Critical 9.3Published Dec 9, 2025

CVE-2021-47707COMMAX CVD-Axx DVR Weak Default Credentials Stream Disclosure

Updated under an hour ago (Oct 27, 2026, 4:23 AM ET)

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It affects COMMAX Co., Ltd. COMMAX CVD-Axx DVR. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for COMMAX Co., Ltd. COMMAX CVD-Axx DVR

Exploited in the last 30 days

COMMAX CVD-Axx DVR 5.1.4 contains weak default administrative credentials that allow remote password attacks and disclose RTSP stream. Attackers can exploit this by sending a POST request with the 'passkey' parameter set to '1234', allowing them to access the web control panel.

CVSS: 9.3 CRITICAL (v4.0, CNA)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
Weakness (CWE): CWE-1392
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Apr 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

COMMAX Co., Ltd. COMMAX CVD-Axx DVR commax:cvd_axx_dvr (from the name)	CVD-AH04 DVR 4.4.1	CNA record

References

References

https://www.exploit-db.com/exploits/50210	exploit
https://www.commax.com	product
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5667.php	third-party-advisory
https://www.vulncheck.com/advisories/commax-cvd-axx-dvr-weak-default-credentials-stream-disclosure	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.