CVE-2023-30466 | Authentication Bypass Vulnerability in Milesight Network Video Recorder (NVR)

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.

Published: 2023-04-28 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-30466 is rated Moderate Risk (64.6/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.80%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-30466

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-16 1.41% 0.80% -0.61%
2 2026-05-14 2.27% 1.41% -0.86%
3 2026-05-13 — 2.27% —

Full EPSS history (24 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-30466

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]

Weakness enumeration for CVE-2023-30466

Affected software / configurations for CVE-2023-30466

Vendor Product Version Raw CPE
milesight ms-n5008-uc_firmware < 73.9.0.18-r2 cpe:2.3:o:milesight:ms-n5008-uc_firmware:*:*:*:*:*:*:*:*
milesight ms-n1008-unc_firmware < 73.9.0.18-r2 cpe:2.3:o:milesight:ms-n1008-unc_firmware:*:*:*:*:*:*:*:*
milesight ms-n1008-uc_firmware < 73.9.0.18-r2 cpe:2.3:o:milesight:ms-n1008-uc_firmware:*:*:*:*:*:*:*:*
milesight ms-n1004-uc_firmware < 73.9.0.18-r2 cpe:2.3:o:milesight:ms-n1004-uc_firmware:*:*:*:*:*:*:*:*
milesight ms-n5016-e_firmware < 75.9.0.18-r2 cpe:2.3:o:milesight:ms-n5016-e_firmware:*:*:*:*:*:*:*:*
milesight ms-n5008-e_firmware < 75.9.0.18-r2 cpe:2.3:o:milesight:ms-n5008-e_firmware:*:*:*:*:*:*:*:*
milesight ms-n7016-uh_firmware < 71.9.0.18-r2 cpe:2.3:o:milesight:ms-n7016-uh_firmware:*:*:*:*:*:*:*:*
milesight ms-n7032-uh_firmware < 71.9.0.18-r2 cpe:2.3:o:milesight:ms-n7032-uh_firmware:*:*:*:*:*:*:*:*
milesight ms-n8064-uh_firmware < 71.9.0.18-r2 cpe:2.3:o:milesight:ms-n8064-uh_firmware:*:*:*:*:*:*:*:*
milesight ms-n8032-uh_firmware < 71.9.0.18-r2 cpe:2.3:o:milesight:ms-n8032-uh_firmware:*:*:*:*:*:*:*:*
milesight ms-n1004-upc_firmware < 73.9.0.18-r2 cpe:2.3:o:milesight:ms-n1004-upc_firmware:*:*:*:*:*:*:*:*
milesight ms-n1008-upc_firmware < 73.9.0.18-r2 cpe:2.3:o:milesight:ms-n1008-upc_firmware:*:*:*:*:*:*:*:*
milesight ms-n1008-unpc_firmware < 73.9.0.18-r2 cpe:2.3:o:milesight:ms-n1008-unpc_firmware:*:*:*:*:*:*:*:*
milesight ms-n5008-upc_firmware < 73.9.0.18-r2 cpe:2.3:o:milesight:ms-n5008-upc_firmware:*:*:*:*:*:*:*:*
milesight ms-n5016-pe_firmware < 75.9.0.18-r2 cpe:2.3:o:milesight:ms-n5016-pe_firmware:*:*:*:*:*:*:*:*
milesight ms-n5008-pe_firmware < 75.9.0.18-r2 cpe:2.3:o:milesight:ms-n5008-pe_firmware:*:*:*:*:*:*:*:*
milesight ms-n7016-uph_firmware < 71.9.0.18-r2 cpe:2.3:o:milesight:ms-n7016-uph_firmware:*:*:*:*:*:*:*:*
milesight ms-n7032-uph_firmware < 71.9.0.18-r2 cpe:2.3:o:milesight:ms-n7032-uph_firmware:*:*:*:*:*:*:*:*
milesight ms-n7048-uph_firmware < 71.9.0.18-r2 cpe:2.3:o:milesight:ms-n7048-uph_firmware:*:*:*:*:*:*:*:*
milesight ms-nxxxx-xxg_firmware < 77.9.0.18-r2 cpe:2.3:o:milesight:ms-nxxxx-xxg_firmware:*:*:*:*:*:*:*:*
milesight ms-nxxxx-xxt_firmware < 72.9.0.18-r2 cpe:2.3:o:milesight:ms-nxxxx-xxt_firmware:*:*:*:*:*:*:*:*

References for CVE-2023-30466

cvelogic Threat Intelligence