How severe is CVE-2025-31703?

CVE-2025-31703 has a CVSS 4.0 base score of 2.4, rated low severity.

Is CVE-2025-31703 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-31703?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-31703 have an EU (EUVD) identifier?

Yes. CVE-2025-31703 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208815.

When was CVE-2025-31703 published?

CVE-2025-31703 was published on 2026-03-18 and last updated on 2026-06-17.

CVE-2025-31703

CVE-2025-31703 is a low-severity vulnerability with a CVSS 4.0 base score of 2.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-305.

Key facts

Severity: Low (CVSS 4.0 base score 2.4)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-208815
Weakness: CWE-305
Published: 2026-03-18
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-31703?: 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.
How severe is CVE-2025-31703?: CVE-2025-31703 has a CVSS 4.0 base score of 2.4, rated low severity.
Is CVE-2025-31703 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-31703?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-31703 have an EU (EUVD) identifier?: Yes. CVE-2025-31703 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208815.
When was CVE-2025-31703 published?: CVE-2025-31703 was published on 2026-03-18 and last updated on 2026-06-17.

References

https://www.dahuasecurity.com/about-dahua/trust-center/dahua-psirt/security-advisory-%E2%80%93-vulnerability-found-in-dahua-nvr-xvr-device

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