CVE-2025-15610Network attack vector

Unauthenticated object injection via exposed .NET Remoting

Published Apr 15, 2026 · Updated Apr 15, 2026

Deserialization of untrusted data in OpenText RightFax allows remote attackers to inject objects through exposed .NET Remoting ports. The framework accepts serialized objects from reachable remoting clients and deserializes them without an effective trust boundary. The service must be reachable over its remoting ports; no authentication or user interaction is required, and exploitation can read or alter data and interrupt the service.

CVSS severity9.3
Critical
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization of untrusted data in OpenText RightFax allows remote attackers to inject objects through exposed .NET Remoting ports. The framework accepts serialized objects from reachable remoting clients and deserializes them without an effective trust boundary. The service must be reachable over its remoting ports; no authentication or user interaction is required, and exploitation can read or alter data and interrupt the service.

The record

CVE
CVE-2025-15610
Published
Apr 15, 2026
Updated
Apr 15, 2026
Vendor
OpenText
Product
RightFax
Classifications
CWE-502, CAPEC-586, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=16.6 <=16.6 Update7136
  2. Affected versionversion=20.2 <=20.2 Update5705
  3. Affected versionversion=21.2 <=21.2.1.2678
  4. Affected versionversion=22.2 <=22.2.2.347
  5. Affected versionversion=23.4 <=23.4.2.853
  6. Affected versionversion=24.4 <=24.4.2.853
  7. Affected versionversion=25.4 <=25.4.2.347

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenText · RightFaxversion=16.6 <=16.6 Update7136; version=20.2 <=20.2 Update5705; version=21.2 <=21.2.1.2678; version=22.2 <=22.2.2.347; version=23.4 <=23.4.2.853; version=24.4 <=24.4.2.853; version=25.4 <=25.4.2.347

Published CVSS scores

9.3OpenTextCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
CAPEC-586Object Injection
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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