Privilege Escalation Vulnerability in Dahua NVR/XVR Devices
CVE-2025-31703

2.4LOW

Key Information:

Vendor

Dahua

Status
Nvr2-4ks3
Xvr4232an-i/t
Xvr1b16h-i/t
Vendor
CVE Published:
18 March 2026

What is CVE-2025-31703?

A vulnerability exists in Dahua NVR/XVR devices that allows a malicious third party with physical access to exploit the serial port. This security flaw enables unauthorized users to access a restricted shell and bypass the authentication mechanisms in place, potentially granting them elevated privileges and access to sensitive functionalities within the device.

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Affected Version(s)

NVR2-4KS3 Versions which Build time prior to 3rd March 2026

XVR1B16H-I/T Versions which Build time prior to 3rd March 2026

XVR4232AN-I/T Versions which Build time prior to 3rd March 2026

References

https://www.dahuasecurity.com/about-dahua/trust-center/da...

CVSS V4

Score:
2.4
Severity:
LOW
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Physical
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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