How to fix EUVD-2025-16773?

Within 24 hours: Identify and inventory all systems running shiyi-blog versions up to 1.2.1; implement network access controls restricting /api/sys/user/verifyPassword/ endpoint to authorized administrators only. Within 7 days: Deploy WAF rules to block exploitation attempts; consider temporary disablement of remote API access if operationally feasible; monitor admin authentication logs for suspicious activity. Within 30 days: Evaluate migration to alternative blog platforms or vendor alternatives; establish vendor communication protocol for future security disclosures; develop incident response plan for potential compromise scenarios.

Is PHP affected by EUVD-2025-16773?

A critical authentication bypass vulnerability in the shiyi-blog administrator backend allows unauthenticated remote attackers to bypass password verification, potentially granting unauthorized administrative access.

EUVD-2025-16773

| CVE-2025-5512 HIGH

2025-06-03 [email protected]

7.3

CVSS 3.1

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 14, 2026 - 17:04 vuln.today

EUVD ID Assigned

Mar 14, 2026 - 17:04 euvd

EUVD-2025-16773

PoC Detected

Oct 03, 2025 - 01:14 vuln.today

Public exploit code

CVE Published

Jun 03, 2025 - 17:15 nvd

HIGH 7.3

Description

A vulnerability, which was classified as critical, was found in quequnlong shiyi-blog up to 1.2.1. Affected is an unknown function of the file /api/sys/user/verifyPassword/ of the component Administrator Backend. The manipulation leads to improper authentication. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Analysis

A security vulnerability in quequnlong shiyi-blog (CVSS 7.3). Risk factors: public PoC available.

Technical Context

CWE-287 (Improper Authentication). CVSS 7.3 indicates high severity. Affects quequnlong shiyi-blog.

Affected Products

['quequnlong shiyi-blog']

Remediation

Monitor vendor channels for patch availability. Restrict network access to affected components and enable MFA as interim mitigation.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.3

CVSS: +36

POC: +20

EUVD-2025-16773 vulnerability details – vuln.today

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EUVD-2025-16773

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EUVD-2025-16773

CVSS Vector

Lifecycle Timeline

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Description

Analysis

Technical Context

Affected Products

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External POC / Exploit Code