CVE-2025-15610 | OpenText RightFax up to 25.4.2.347 on Windows deserialization (KB0861863)

VDB-357767 · CVE-2025-15610 · KB0861863 OPENTEXT RIGHTFAX UP TO 25.4.2.347 ON WINDOWS DESERIALIZATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.3 $0-$5k 2.79+ Summaryinfo A vulnerability marked as critical has been reported in OpenText RightFax up to 25.4.2.347 on Windows. This vulnerability affects unknown code. The manipulation leads to deserialization. This vulnerability is uniquely identified as CVE-2025-15610. The attack is possible to be carried out remotely. No exploit exists. Detailsinfo A vulnerability was found in OpenText RightFax up to 25.4.2.347 on Windows. It has been rated as critical. This issue affects an unknown code. The manipulation with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability. The summary by CVE is: Deserialization of untrusted data vulnerability in OpenText, Inc RightFax on Windows, 64 bit, 32 bit allows Object Injection.This issue affects RightFax: through 25.4. It is possible to read the advisory at support.opentext.com. The identification of this vulnerability is CVE-2025-15610 since 03/16/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/15/2026). There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor OpenText Name RightFax Version 16.6 Update7136 20.2 Update5705 21.2.1.2678 22.2.2.347 23.4.2.853 24.4.2.853 25.4.2.347 License commercial CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 7.3 VulDB Meta Temp Score: 7.3 VulDB Base Score: 7.3 VulDB Temp Score: 7.3 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Deserialization CWE: CWE-502 / CWE-20 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/16/2026 CVE reserved 04/15/2026 +29 days Advisory disclosed 04/15/2026 +0 days VulDB entry created 04/15/2026 +0 days VulDB entry last update Sourcesinfo Advisory: KB0861863 Status: Confirmed CVE: CVE-2025-15610 (🔒) GCVE (CVE): GCVE-0-2025-15610 GCVE (VulDB): GCVE-100-357767 Entryinfo Created: 04/15/2026 20:06 Changes: 04/15/2026 20:06 (65) Complete: 🔍 Cache ID: 99:3DC:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸