CVE-2024-3721 (GCVE-0-2024-3721)

Vulnerability from cvelistv5 – Published: 2024-04-13 12:00 – Updated: 2024-08-01 20:20
VLAI Shadowserver Previdian SiberKapan
Title
TBK DVR-4104/DVR-4216 os command injection
Summary
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.
Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-02 18:02 UTC
CWE
  • CWE-78 - OS Command Injection
Assigner
VulDB CNA under the mitre root
CNA scorecard B 83/100 over 3832 records in the last 180 days details
References
URL Tags
https://vuldb.com/?id.260573 vdb-entrytechnical-description
https://vuldb.com/?ctiid.260573 signaturepermissions-required
https://vuldb.com/?submit.314969 third-party-advisory
https://github.com/netsecfish/tbk_dvr_command_injection exploit
Impacted products
Vendor Product Version CPE status
TBK DVR-4104 Affected: 20240412
guessed Create a notification for this product.
TBK DVR-4216 Affected: 20240412
guessed Create a notification for this product.
tbkvision tbk-dvr4104 Affected: 0
    cpe:2.3:h:tbkvision:tbk-dvr4104:-:*:*:*:*:*:*:*
Create a notification for this product.
tbkvision tbk-dvr4216 Affected: 0
    cpe:2.3:h:tbkvision:tbk-dvr4216:-:*:*:*:*:*:*:*
Create a notification for this product.
Credits
netsecfish (VulDB User)
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 30f51e5d-ded8-447e-b17c-12e279f9e00e

Vulnerability ID: CVE-2024-3721

Status: Confirmed

Status Updated: 2026-11-07 00:00 UTC

Exploited: Yes

Characteristics
Severity: 0.0
Timestamps
First Seen: 2024-04-21
Asserted: 2024-04-21
Last Seen: 2026-11-07
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: TBK / TBK DVR-4104/DVR-4216 | Class: video-system | Severity: None (CVSS 0) | IoT: yes | In CISA KEV: no | Honeypot connections on 2026-11-07: 262
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 2
Iot yes
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class video-system
7D Avg 2
Vendor TBK
30D Avg 2
90D Avg 1
Product TBK DVR-4104/DVR-4216
Cisa Kev no
Connections 262
Observation Date 2026-11-07
Vulnerability Class CVSS
Vulnerability Score 0
Vulnerability Severity None
References
Created: 2026-07-01 05:53 UTC | Updated: 2026-11-09 01:00 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 10b9d3da-00bc-4df3-853f-ab74a07d3eb9

Vulnerability ID: CVE-2024-3721

Status: Confirmed

Status Updated: 2025-04-28 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2025-04-28
Asserted: 2025-04-28
Scope
Notes: KEVIntel entry: TBK DVR-4104/DVR-4216 os command injection | Affected: TBK / DVR-4104, DVR-4216 | CVSS: 6.3 (MEDIUM) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title TBK DVR-4104/DVR-4216 os command injection
Vendor TBK
Product DVR-4104, DVR-4216
Added Date 2025-04-28T00:00:00.000Z
Cvss Score 6.3
Epss Score None
Cvss Severity MEDIUM
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-23 11:13 UTC | Updated: 2026-06-23 11:13 UTC
SiberKapan
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: ccb78995-c8a6-4038-a929-28da5975ca16

Vulnerability ID: CVE-2024-3721

Status: Confirmed

Status Updated: 2026-11-07 13:23 UTC

Exploited: Yes

Timestamps
First Seen: 2026-08-09
Last Seen: 2026-11-07
Scope
Observation Regions: Western Asia
Asset Exposure: ['internet-facing']
Notes: Observed on SiberKapan honeypot and production web server sensors located in Turkey. Regions reflect sensor coverage, not global exclusivity.
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 80%

Source: SiberKapan

Details
Description TBK DVR command injection
Attempts 90D 1349
Sensor Types nginx
Signature Strength strong
Distinct Source Ips 90D 22
Successful Exploitation False
References
Created: 2026-11-07 18:25 UTC | Updated: 2026-11-07 18:25 UTC
Show details on NVD website
To clipboard 

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            "providerMetadata": {
              "dateUpdated": "2024-07-02T18:18:33.476Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "DVR-4104",
              "vendor": "TBK",
              "versions": [
                {
                  "status": "affected",
                  "version": "20240412"
                }
              ]
            },
            {
              "product": "DVR-4216",
              "vendor": "TBK",
              "versions": [
                {
                  "status": "affected",
                  "version": "20240412"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "reporter",
              "value": "netsecfish (VulDB User)"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "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\u0026cmd=___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."
            },
            {
              "lang": "de",
              "value": "Eine kritische Schwachstelle wurde in TBK DVR-4104 and DVR-4216 bis 20240412 gefunden. Betroffen davon ist ein unbekannter Prozess der Datei /device.rsp?opt=sys\u0026cmd=___S_O_S_T_R_E_A_MAX___. Mittels dem Manipulieren des Arguments mdb/mdc mit unbekannten Daten kann eine os command injection-Schwachstelle ausgenutzt werden. Die Umsetzung des Angriffs kann dabei \u00fcber das Netzwerk erfolgen. Der Exploit steht zur \u00f6ffentlichen Verf\u00fcgung."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 6.3,
                "baseSeverity": "MEDIUM",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
                "version": "3.1"
              }
            },
            {
              "cvssV3_0": {
                "baseScore": 6.3,
                "baseSeverity": "MEDIUM",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
                "version": "3.0"
              }
            },
            {
              "cvssV2_0": {
                "baseScore": 6.5,
                "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
                "version": "2.0"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-78",
                  "description": "CWE-78 OS Command Injection",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2024-04-13T12:00:04.795Z",
            "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
            "shortName": "VulDB"
          },
          "references": [
            {
              "name": "VDB-260573 | TBK DVR-4104/DVR-4216 os command injection",
              "tags": [
                "vdb-entry",
                "technical-description"
              ],
              "url": "https://vuldb.com/?id.260573"
            },
            {
              "name": "VDB-260573 | CTI Indicators (IOB, IOC, TTP, IOA)",
              "tags": [
                "signature",
                "permissions-required"
              ],
              "url": "https://vuldb.com/?ctiid.260573"
            },
            {
              "name": "Submit #314969 | TBK TBK DVR-4104, TBK DVR-4216 N/A Command Injection",
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://vuldb.com/?submit.314969"
            },
            {
              "tags": [
                "exploit"
              ],
              "url": "https://github.com/netsecfish/tbk_dvr_command_injection"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2024-04-12T00:00:00.000Z",
              "value": "Advisory disclosed"
            },
            {
              "lang": "en",
              "time": "2024-04-12T02:00:00.000Z",
              "value": "VulDB entry created"
            },
            {
              "lang": "en",
              "time": "2024-04-12T19:25:37.000Z",
              "value": "VulDB entry last update"
            }
          ],
          "title": "TBK DVR-4104/DVR-4216 os command injection"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "assignerShortName": "VulDB",
        "cveId": "CVE-2024-3721",
        "datePublished": "2024-04-13T12:00:04.795Z",
        "dateReserved": "2024-04-12T17:19:17.559Z",
        "dateUpdated": "2024-08-01T20:20:00.692Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

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