CVE-2018-25126

Nov. 25, 2025, 10:16 p.m.

9.3
Critical

Description

Shenzhen TVT Digital Technology Co., Ltd. NVMS-9000 firmware (used by many white-labeled DVR/NVR/IPC products) contains hardcoded API credentials and an OS command injection flaw in its configuration services. The web/API interface accepts HTTP/XML requests authenticated with a fixed vendor credential string and passes user-controlled fields into shell execution contexts without proper argument sanitization. An unauthenticated remote attacker can leverage the hard-coded credential to access endpoints such as /editBlackAndWhiteList and inject shell metacharacters inside XML parameters, resulting in arbitrary command execution as root. The same vulnerable backend is also reachable in some models through a proprietary TCP service on port 4567 that accepts a magic GUID preface and base64-encoded XML, enabling the same command injection sink. Firmware releases from mid-February 2018 and later are reported to have addressed this issue. Exploitation evidence was observed by the Shadowserver Foundation on 2025-01-28 UTC.

Product(s) Impacted

Vendor Product Versions
Shenzhen Tvt Digital Technology
  • Nvms-9000
  • Ipc
  • Dvr
  • Nvr
  • *
  • *
  • *
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a shenzhen_tvt_digital_technology nvms-9000 / / / / / / / /
a shenzhen_tvt_digital_technology ipc / / / / / / / /
a shenzhen_tvt_digital_technology dvr / / / / / / / /
a shenzhen_tvt_digital_technology nvr / / / / / / / /

References

https://blogs.juniper.net/en-us/threat-research/iot-botnet-exploiting-tvt-shenzhen-dvrs-still-lingers
https://github.com/mcw0/PoC/blob/master/TVT_and_OEM_IPC_NVR_DVR_RCE_Backdoor_and_Information_Disclosure.txt
https://qkl.seebug.org/vuldb/ssvid-97217
https://web.archive.org/web/20180614014914/http://en.tvt.net.cn:80/news/227.html
https://www.vulncheck.com/advisories/tvt-nvms9000-hardcoded-api-credentials-and-command-injection

Tags

CWE-78
disclosure@vulncheck.com
2025-11-24
CVE-2018-25126

CVSS Score

9.3 / 10

CVSS Data - 4.0

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Attack Requirements: NONE
  • Privileges Required: NONE
  • User Interaction: NONE
  • Scope:
  • Confidentiality Impact: HIGH
  • Integrity Impact: HIGH
  • Availability Impact: HIGH
  • Exploit Maturity: NOT_DEFINED

    • 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

    View Vector String

Timeline

Published: Nov. 24, 2025, 9:16 p.m.
Last Modified: Nov. 25, 2025, 10:16 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

disclosure@vulncheck.com

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.