Vulnerability · Published Mar 18, 2026 · Assigned by dahua
CVE-2025-31703
Low 2.4
In plain English
A low-severity security flaw in NVR2-4KS3 from dahua. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).
Severity (CVSS 4.0)2.4Low
Exploit odds (30 days)0.3%top 77.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| 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 |
Weakness: CWE-305 · Vector: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N