How severe is CVE-2025-66173?

CVE-2025-66173 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over physical access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-66173 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66173?

CVE-2025-66173 primarily affects Hikvision Ds-7104hghi-f1 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-66173?

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

Does CVE-2025-66173 have an EU (EUVD) identifier?

Yes. CVE-2025-66173 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204452.

When was CVE-2025-66173 published?

CVE-2025-66173 was published on 2025-12-19 and last updated on 2026-06-17.

CVE-2025-66173

CVE-2025-66173 is a medium-severity vulnerability in Hikvision Ds-7104hghi-f1 Firmware with a CVSS 3.x base score of 6.2. 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-269.

Key facts

Severity: Medium (CVSS 3.x base score 6.2)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204452
Weakness: CWE-269
Affected product: Hikvision Ds-7104hghi-f1 Firmware
Published: 2025-12-19
Last modified: 2026-06-17

Description

There is a privilege escalation vulnerability in some Hikvision DVR products. Due to the improper implementation of authentication for the serial port, an attacker with physical access could exploit this vulnerability by connecting to the affected products and gaining access to an unrestricted shell environment.

Frequently asked questions

What is CVE-2025-66173?: There is a privilege escalation vulnerability in some Hikvision DVR products. Due to the improper implementation of authentication for the serial port, an attacker with physical access could exploit this vulnerability by connecting to the affected products and gaining access to an unrestricted shell environment.
How severe is CVE-2025-66173?: CVE-2025-66173 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over physical access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-66173 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66173?: CVE-2025-66173 primarily affects Hikvision Ds-7104hghi-f1 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-66173?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-66173 have an EU (EUVD) identifier?: Yes. CVE-2025-66173 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204452.
When was CVE-2025-66173 published?: CVE-2025-66173 was published on 2025-12-19 and last updated on 2026-06-17.

References

https://www.hikvision.com/en/support/cybersecurity/security-advisory/serial-port-privilege-escalation-vulnerabilities-in-some-hikvision-nvr-devices/

Affected products (2)

cpe:2.3:o:hikvision:ds-7104hghi-f1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hikvision:ds-7204hghi-f1_firmware:*:*:*:*:*:*:*:*

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