CVE-2025-15610
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 · uneditedThe .NET Remoting framework used by OpenText Fax (RightFax) includes known security vulnerabilities that could be exploited if the service is exposed in environments where the remoting ports are accessible.
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 confidenceOpenText RightFax uses .NET Remoting, an older Microsoft framework with known deserialization vulnerabilities that can lead to remote code execution. When remoting ports are accessible to untrusted networks, attackers can exploit these flaws to execute arbitrary code on the affected server.
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
- Network
- Complexity
- Low
- Privileges
- None
- Authentication
- X
- User interaction
- None
- Scope
- X
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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 RightFax installationCheck for RightFax installation directory (typically C:\Program Files\OpenText\RightFax or C:\RightFax), RightFax services in Windows Services (look for 'RightFax' or 'Fax' services), or registry keys under HKEY_LOCAL_MACHINE\SOFTWARE\RightFaxAffected if RightFax is not installed on the system
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Identify .NET Remoting configurationExamine RightFax configuration files in the installation directory for .NET Remoting settings. Look for files like RFaxServer.exe.config or Web.config that may contain <system.runtime.remoting> sectionsAffected if Remoting configuration sections are present and enabled in RightFax config files
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Locate remoting service portsSearch configuration files for port numbers in remoting settings (common default: port 5052, but check for any <channel> definitions with port= attributes)Affected if Remoting ports are explicitly defined in the configuration
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Check port network bindingRun 'netstat -an | findstr <port_number>' or 'Get-NetTCPConnection -LocalPort <port_number>' to see if the remoting port binds to 0.0.0.0 (all interfaces) rather than 127.0.0.1 (localhost only)Affected if The remoting port shows a local address of 0.0.0.0 or :: meaning it accepts external connections
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Verify network accessibilityUse 'Test-NetConnection -Port <port_number> -ComputerName <server>' from an external system, or check firewall rules with 'netsh advfirewall firewall show rule name=all' to see if the port is allowed through Windows FirewallAffected if The remoting port is open in firewall rules and reachable from network hosts
A system is affected if RightFax is installed with .NET Remoting enabled and the remoting ports are bound to network-accessible addresses rather than localhost only.
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 network access to RightFax remoting ports by implementing firewall rules or network segmentation to block untrusted access; if possible, disable .NET Remoting entirely or apply vendor-supplied patches.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-15610 — 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-2025-15610 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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