CVE-2024-3721
TBK DVR-4104/DVR-4216 os command injection
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Description
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.
Official description from the CVE record, published by VulDB. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org
Key data
CVSS 3.1 Medium 6.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack vector: Network
The vulnerable component can be reached over a network, possibly from the Internet.
Attack complexity: Low
No special conditions are needed. The attack can be repeated at will.
Privileges required: Low
A basic user account is needed.
User interaction: None
No action from any user is needed.
Scope: Unchanged
The impact stays within the vulnerable component.
Confidentiality impact: Low
Limited effect on the secrecy of data.
Integrity impact: Low
Limited effect on the trustworthiness of data.
Availability impact: Low
Limited effect on availability.
| Metric | Value | What it means |
|---|---|---|
| Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity | Low | No special conditions are needed. The attack can be repeated at will. |
| Privileges required | Low | A basic user account is needed. |
| User interaction | None | No action from any user is needed. |
| Scope | Unchanged | The impact stays within the vulnerable component. |
| Confidentiality impact | Low | Limited effect on the secrecy of data. |
| Integrity impact | Low | Limited effect on the trustworthiness of data. |
| Availability impact | Low | Limited effect on availability. |
CVSS 3.0 Medium 6.3
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack vector: Network
The vulnerable component can be reached over a network, possibly from the Internet.
Attack complexity: Low
No special conditions are needed. The attack can be repeated at will.
Privileges required: Low
A basic user account is needed.
User interaction: None
No action from any user is needed.
Scope: Unchanged
The impact stays within the vulnerable component.
Confidentiality impact: Low
Limited effect on the secrecy of data.
Integrity impact: Low
Limited effect on the trustworthiness of data.
Availability impact: Low
Limited effect on availability.
| Metric | Value | What it means |
|---|---|---|
| Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity | Low | No special conditions are needed. The attack can be repeated at will. |
| Privileges required | Low | A basic user account is needed. |
| User interaction | None | No action from any user is needed. |
| Scope | Unchanged | The impact stays within the vulnerable component. |
| Confidentiality impact | Low | Limited effect on the secrecy of data. |
| Integrity impact | Low | Limited effect on the trustworthiness of data. |
| Availability impact | Low | Limited effect on availability. |
CVSS 2.0 Medium 6.5
AV:N/AC:L/Au:S/C:P/I:P/A:P
Access vector: Network
The vulnerable component can be reached over a network, possibly from the Internet.
Access complexity: Low
Specialized access conditions do not exist: the attack needs no special circumstances.
Authentication: Single
The attacker needs to log in once.
Confidentiality impact: Partial
Some data can be read.
Integrity impact: Partial
Some data can be changed.
Availability impact: Partial
Performance is reduced or some functions are interrupted.
| Metric | Value | What it means |
|---|---|---|
| Access vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. |
| Access complexity | Low | Specialized access conditions do not exist: the attack needs no special circumstances. |
| Authentication | Single | The attacker needs to log in once. |
| Confidentiality impact | Partial | Some data can be read. |
| Integrity impact | Partial | Some data can be changed. |
| Availability impact | Partial | Performance is reduced or some functions are interrupted. |
CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at first.org/cvss.
EPSS
- Score
- 0.86489 (86.5% probability)
- Percentile
- 99.7%
- Scores of
- Nov 10, 2026
- Model
- v2026.06.15
CISA assessment as of Jul 2, 2024
- Exploitation
- Public proof of concept recorded by CISA
- Automatable
- no
- Technical impact
- partial
Weakness (CWE)
- CWE-78Improper Neutralization of Special Elements used in an OS Command
Affected products
TBK DVR-4104
- affected: 20240412
TBK DVR-4216
- affected: 20240412
References
- VDB-260573 | TBK DVR-4104/DVR-4216 os command injection (vuldb.com)vdb-entrytechnical-description
- VDB-260573 | CTI Indicators (IOB, IOC, TTP, IOA) (vuldb.com)signaturepermissions-required
- Submit #314969 | TBK TBK DVR-4104, TBK DVR-4216 N/A Command Injection (vuldb.com)third-party-advisory
- github.com/netsecfish/tbk_dvr_command_injectionexploit
Timeline
- ID reserved
- Record published
- Record last updated
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About CubePath
Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:52 UTC. Sources and licenses