CVE-2025-31703
Low
Description
A vulnerability found in Dahua NVR/XVR device. A third-party malicious attacker with physical access to the device may gain access to a restricted shell via the serial port, and bypasses the shell's authentication mechanism to escalate privileges.
SeverityLow
CVSS2.4
Exploit probability—
ProductNVR2-4KS3
PublishedMar 18, 2026
First seenMar 18, 2026
Weakness typeCWE-305CWE-305
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| dahua NVR2-4KS3 | Versions which Build time prior to 3rd March 2026 | — |
| dahua XVR4232AN-I/T | Versions which Build time prior to 3rd March 2026 | — |
| dahua XVR1B16H-I/T | Versions which Build time prior to 3rd March 2026 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.