CVE-2025-15610
Deserialization leads to Object Injection in OpenText RightFax on Windows.
Is CVE-2025-15610 being exploited?
Not confirmed. CVE-2025-15610 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.31% probability of exploitation in the next 30 days.
How severe is CVE-2025-15610?
CVE-2025-15610 is rated Critical with a CVSS score of 9.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2025-15610?
Not known from our data. No patch reference has been recorded for CVE-2025-15610, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2025-15610 affect?
CVE-2025-15610 affects OpenText RightFax for Windows (x64/x86), <=25.4. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2025-15610?
Patch when available; limit exposure; monitor RightFax activity
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution on RightFax server via crafted deserialization.
Immediate action required
- affected>= 16.6 and <= 16.6 Update7136
- affected>= 20.2 and <= 20.2 Update5705
- affected>= 21.2 and <= 21.2.1.2707
- affected>= 22.2 and <= 22.2.0.1644
- affected>= 23.4 and <= 26.4.0.1644
- affected>= 24.4 and <= 24.4.0.1644
- affected>= 25.4 and <= 25.4.0.1644
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.