CVE-2025-15610 OpenText, Inc CVE debrief

Who should care

Defenders responsible for OpenText Fax (RightFax) deployments should assess exposure and prioritize verification and remediation efforts. This includes verifying exposure of services in environments where remoting ports are accessible, assessing compensating controls, and reviewing vendor remediation guidance. Security teams and vulnerability management teams should also review this CVE for potential impact on their

Why it matters

CVE-2025-15610 is a critical vulnerability in the .NET Remoting framework used by OpenText Fax (RightFax) with a CVSS score of 9.3. Defenders should prioritize verifying exposure and remediation efforts.

• Verify exposure of OpenText Fax (RightFax) services in environments where remoting ports are accessible
• Assess the need for compensating controls or monitoring
• Review vendor remediation guidance

Technical summary

The .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. This could allow attackers to execute arbitrary code or conduct other malicious activities. Defenders should prioritize verifying exposure and remediation efforts.

Defensive priority

Defenders should prioritize verifying exposure of OpenText Fax (RightFax) services in environments where remoting ports are accessible.

Recommended defensive actions

• Verify exposure of OpenText Fax (RightFax) services in environments where remoting ports are accessible
• Assess the need for compensating controls or monitoring
• Review vendor remediation guidance

Evidence notes

The CVE description notes that .NET Remoting framework used by OpenText Fax (RightFax) includes known security vulnerabilities. The CVE record was published on 2026-04-15T17:17:00.020Z. Defenders should verify exposure of OpenText Fax (RightFax) services in environments where remoting ports are accessible. Evidence is limited to CVE metadata and NVD detail page.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.