How severe is CVE-2023-30466?

CVE-2023-30466 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-30466 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-30466?

CVE-2023-30466 primarily affects Milesight Ms-n5008-uc Firmware. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-30466?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-30466 published?

CVE-2023-30466 was published on 2023-04-28 and last updated on 2026-06-17.

CVE-2023-30466

CVE-2023-30466 is a critical-severity vulnerability in Milesight Ms-n5008-uc Firmware with a CVSS 3.x base score of 9.8. 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-640.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-640
Affected product: Milesight Ms-n5008-uc Firmware
Published: 2023-04-28
Last modified: 2026-06-17

Description

This vulnerability exists in Milesight 4K/H.265 Series NVR models (MS-Nxxxx-xxG, MS-Nxxxx-xxE, MS-Nxxxx-xxT, MS-Nxxxx-xxH and MS-Nxxxx-xxC), due to a weak password reset mechanism at the Milesight NVR web-based management interface. A remote attacker could exploit this vulnerability by sending a specially crafted http requests on the targeted device. Successful exploitation of this vulnerability could allow remote attacker to account takeover on the targeted device.

Frequently asked questions

What is CVE-2023-30466?: This vulnerability exists in Milesight 4K/H.265 Series NVR models (MS-Nxxxx-xxG, MS-Nxxxx-xxE, MS-Nxxxx-xxT, MS-Nxxxx-xxH and MS-Nxxxx-xxC), due to a weak password reset mechanism at the Milesight NVR web-based management interface. A remote attacker could exploit this vulnerability by sending a specially crafted http requests on the targeted device. Successful exploitation of this vulnerability could allow remote attacker to account takeover on the targeted device.
How severe is CVE-2023-30466?: CVE-2023-30466 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-30466 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-30466?: CVE-2023-30466 primarily affects Milesight Ms-n5008-uc Firmware. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-30466?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-30466 published?: CVE-2023-30466 was published on 2023-04-28 and last updated on 2026-06-17.

References

https://www.cert-in.org.in/s2cMainServlet?pageid=PUBVLNOTES01&VLCODE=CIVN-2023-0121

Affected products (21)

cpe:2.3:o:milesight:ms-n5008-uc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n1008-unc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n1008-uc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n1004-uc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n5016-e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n5008-e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n7016-uh_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n7032-uh_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n8064-uh_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n8032-uh_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n1004-upc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n1008-upc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n1008-unpc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n5008-upc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n5016-pe_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n5008-pe_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n7016-uph_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n7032-uph_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-n7048-uph_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-nxxxx-xxg_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:milesight:ms-nxxxx-xxt_firmware:*:*:*:*:*:*:*:*

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