Cyber Resilience

CVE-2023-30466

Auth Bypass in Milesight Ms-N5008-Uc Firmware ≤ 73.9.0.18-r2

Auth Bypass
Published
28 April 2023
Modified
21 November 2024
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.011 63th percentile
Risk Priority 75 floored blend · peak EPSS

Summary

CVE-2023-30466 is a critical-severity Weak Password Recovery Mechanism for Forgotten Password (CWE-640) vulnerability in Milesight Ms-N5008-Uc Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Valid Accounts (T1078); ranked in the top 37% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A07:2025 Authentication Failures

EU & UK References

Vulnerability Data

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…

more

crafted http requests on the targeted device. Successful exploitation of this vulnerability could allow remote attacker to account takeover on the targeted device.

CWE(s)
CWE-640

Related Threats

MITRE ATT&CK Enterprise Techniques

T1078 Valid Accounts Stealth
Adversaries may obtain and abuse credentials of existing accounts as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion.
attack.mitre.org →
T1110 Brute Force Credential Access
Adversaries may use brute force techniques to gain access to accounts when passwords are unknown or when password hashes are obtained.
attack.mitre.org →
T1110.001 Password Guessing Credential Access
Adversaries with no prior knowledge of legitimate credentials within the system or environment may guess passwords to attempt access to accounts.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-30467Same product: Milesight Ms-N1004-Uc
CVE-2024-0186Shared CWE-640
CVE-2025-50433Shared CWE-640
CVE-2023-43650Shared CWE-640
CVE-2026-9273Shared CWE-640
CVE-2026-9609Shared CWE-640
CVE-2023-42481Shared CWE-640
CVE-2026-7655Shared CWE-640
CVE-2024-9907Shared CWE-640
CVE-2023-35717Shared CWE-640

Affected Assets

milesight
ms-n5008-uc firmware
≤ 73.9.0.18-r2
milesight
ms-n1008-unc firmware
≤ 73.9.0.18-r2
milesight
ms-n1008-uc firmware
≤ 73.9.0.18-r2
milesight
ms-n1004-uc firmware
≤ 73.9.0.18-r2
milesight
ms-n5016-e firmware
≤ 75.9.0.18-r2
milesight
ms-n5008-e firmware
≤ 75.9.0.18-r2
milesight
ms-n7016-uh firmware
≤ 71.9.0.18-r2
milesight
ms-n7032-uh firmware
≤ 71.9.0.18-r2
milesight
ms-n8064-uh firmware
≤ 71.9.0.18-r2
milesight
ms-n8032-uh firmware
≤ 71.9.0.18-r2
+11 more product configuration(s) — see NVD for full list

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V7.4.3

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

IA-5 Authenticator Management
addresses: CWE-640

Establishing procedures for lost or compromised authenticators addresses weak password recovery mechanisms.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-01 mostly match
prevents

Credential lifecycle management directly includes password reset/recovery flows.

PR.AA-02 mostly match
prevents

Identity proofing is the core control that prevents weak or bypassed recovery mechanisms.

PR.AA-03 partial match
prevents

Authentication policy covers strength/MFA but does not address recovery path weaknesses.

PR.PS-06 partial match
prevents

Secure SDLC reduces implementation flaws but is not specific to password-recovery design.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.17 Authentication information partial match
degrades

Strong authentication-information lifecycle rules directly address weak password-recovery flows.

A.8.25 Secure development life cycle partial match
prevents

Secure-SDLC practices can embed strong recovery design, yet the control is broader than this single weakness.

A.8.26 Application security requirements partial match
prevents

Application-security requirements can mandate secure recovery flows, but the control covers many other requirements.

A.8.28 Secure coding partial match
prevents

Secure-coding standards can prevent weak recovery implementations, yet the control is wider in scope.

A.8.5 Secure authentication partial match
mitigates

Secure-authentication requirements include robust forgotten-password procedures.

A.5.18 Access rights none match
none

Proper access-rights provisioning can limit who can trigger recovery, but does not fix the recovery mechanism itself.

References