CVE-2025-1676
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 was found in hzmanyun Education and Training System 3.1.1. Affected by this vulnerability is the function pdf2swf of the file /pdf2swf. The manipulation of the argument file leads to os command injection. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
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 · high confidenceOS command injection vulnerability in hzmanyun Education and Training System 3.1.1 allows remote attackers to execute arbitrary OS commands through the 'file' parameter in the /pdf2swf endpoint. The pdf2swf function fails to sanitize user input before passing it to a system call, enabling attackers to inject shell commands.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 3.1.1CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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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Confirm Hzmanyun Education and Training System is installedIdentify the application through installed files, running services, or web server directories that contain 'hzmanyun' or similar brandingAffected if The system hosts the Hzmanyun Education And Training System application
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Verify the installed version is 3.1.1Locate version information in application configuration files, about pages, or the software metadata where the version is listedAffected if The installed version is exactly 3.1.1 (no other versions are listed as affected)
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Determine if the pdf2swf functionality is enabledCheck application configuration files, modules, or feature flags that control whether pdf2swf processing is activeAffected if The pdf2swf feature is enabled in the application configuration
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Check if the /pdf2swf endpoint is network accessibleProbe the application's web interface for the /pdf2swf endpoint using HTTP requests to determine if it respondsAffected if The /pdf2swf endpoint is reachable over the network (internal or external)
A system is affected if it runs Hzmanyun Education And Training System version 3.1.1 with the pdf2swf feature enabled and the /pdf2swf endpoint accessible.
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 dataImmediately restrict network access to the /pdf2swf endpoint, implement strict input validation to prevent command injection, and apply vendor patches when available. Consider disabling pdf2swf functionality if not essential.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-1676 — 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-2025-1676 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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