CVE-2025-4532
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA vulnerability classified as critical has been found in Shanghai Bairui Information Technology SunloginClient 15.8.3.19819. This affects an unknown part in the library process.dll of the file sunlogin_guard.exe. The manipulation leads to uncontrolled search path. Local access is required to approach this attack. The complexity of an attack is rather high. The exploitability is told to be difficult. 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThis is an uncontrolled search path vulnerability (DLL hijacking) in SunloginClient 15.8.3.19819. The process.dll library is loaded by sunlogin_guard.exe without secure path specification, allowing a local attacker to place a malicious DLL in a directory that gets searched before the legitimate location, potentially leading to arbitrary code execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- High
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Verify SunloginClient versionLocate the SunloginClient installation directory (typically in Program Files or Program Files (x86)) and check the version of sunlogin_guard.exe or the main client executable by right-clicking and selecting Properties > DetailsAffected if The installed version matches 15.8.3.19819 or is within the affected version range of SunloginClient 15.8.3.19819
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Confirm sunlogin_guard.exe existsSearch for sunlogin_guard.exe in the SunloginClient installation folder and verify it is presentAffected if sunlogin_guard.exe is found on the system, indicating the vulnerable component is installed
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Check for process.dllLocate process.dll in the same directory as sunlogin_guard.exe or in the application's bin folderAffected if process.dll exists in the application directory, confirming the DLL that can be hijacked is present
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Identify writable directories in DLL search pathExamine directories that would be searched before the legitimate DLL location (current working directory, application directory, system directories in PATH). Check write permissions on these directories, especially the application's working directoryAffected if A directory in the DLL search path (particularly the application's working directory) is writable by a local user, allowing placement of a malicious DLL before the legitimate process.dll is loaded
A user is affected if SunloginClient version 15.8.3.19819 is installed, sunlogin_guard.exe with process.dll exists, and directories in the DLL search path are writable by unprivileged users.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataRestrict write permissions in directories within the DLL search path, run the application from a controlled directory with strict access controls, and implement application whitelisting until an official vendor patch is released.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-4532 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-4532 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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