CVE-2025-1782
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 · uneditedIn HylaFAX Enterprise Web Interface and AvantFAX, the language form element is not properly sanitized before being used and can be misused to include an arbitrary file in the PHP code allowing an attacker to do anything as the web server user. This flaw requires the attacker to be authenticated with a valid user account.
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 confidenceThis is a Local File Inclusion (LFI) vulnerability in the HylaFAX Enterprise Web Interface and AvantFAX where the language form parameter is not sanitized before use. An authenticated attacker can manipulate the parameter to include arbitrary server files, which are then executed as PHP code, granting full control of the server as the web server user.
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< 3.4.1< 1.2.1>= 1.3.0, < 1.3.2CVSS 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
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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 HylaFAX or AvantFAX installationCheck for HylaFAX Enterprise or AvantFAX packages/services on the system using package manager (rpm -qa | grep -i hylafax or dpkg -l | grep -i avantfax) or locate web application files in common paths like /var/www/, /usr/local/apache/htdocs/, or /opt/Affected if Either HylaFAX Enterprise Web Interface or AvantFAX is installed on the system
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Identify web interface access pointLocate the web application root directory and verify the web server configuration (httpd.conf, nginx.conf) exposes the fax web interface, typically on ports 80/443 or a custom port like 8080Affected if The web interface is accessible over the network (even locally)
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Verify authentication configurationReview the web application configuration files and session management settings to confirm whether the web interface enforces user authentication for all endpoints, particularly language selection formsAffected if The web interface allows unauthenticated access to the language parameter endpoint or has weak authentication enforcement
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Inspect language parameter handlingExamine the PHP source code handling the language form parameter (typically in language selection or locale-related scripts) to verify whether input validation or path sanitization is implemented on the 'language' or 'lang' POST/GET parameterAffected if The language parameter accepts full file paths or path traversal sequences (e.g., ../../etc/passwd) without validation
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Check for file inclusion functions in codeSearch the web application source for use of include(), require(), include_once(), or require_once() functions that incorporate the language parameter value without proper sanitization (grep -r 'include.*\$lang' or similar patterns in PHP files)Affected if The application uses dynamic file inclusion with unsanitized user input from the language parameter
A user is affected if they have HylaFAX Enterprise or AvantFAX installed with an accessible web interface where the language parameter can be manipulated by authenticated users to include arbitrary files.
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 data1.2.11.3.23.4.1
Immediately restrict user account access, implement strict input validation on the language parameter to prevent path traversal, and apply vendor patches when available. Consider disabling the language selection feature as a temporary workaround.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-1782 — 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-2025-1782 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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