Vulnerability intelligence
CVE-2024-3721
A vulnerability was found in TBK DVR-4104 and DVR-4216 up to 20240412 and classified as critical. This issue affects some unknown processing of the file /device.rsp?opt=sys&cmd=___S_O_S_T_R_E_A_MAX___. The manipulation of the argument mdb/mdc leads to os command injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-260573 was assigned to this vulnerability.
CVSS Score
6.5
Medium
EPSS — Exploit Probability
86%
Riskier than 100% of all CVEs
Exploitation
Not in CISA KEV
No federal exploitation record
Remediation
unknown
Check vendor advisories
3 articles across 3 outlets · first covered Apr 19, 2026 · latest Apr 20, 2026
Coverage timeline
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Mirai based Nexcorium botnet exploits TBK DVR flaw CVE-2024-3721www.infosecurity-magazine.com · Apr 20, 2026
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Nexcorium hijacks TBK DVRs via CVE-2024-3721 for DDoS botnetthehackernews.com · Apr 19, 2026
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Nexcorium Mirai Botnet Exploits CVE-2024-3721 on TBK DVRssecurityaffairs.com · Apr 19, 2026