Use After Free Vulnerability in EIPStackGroup OpENer Software
CVE-2026-10703

5.3MEDIUM

Key Information:

Vendor

Eipstackgroup

Status
Opener
Vendor
CVE Published:
3 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-10703?

A security vulnerability has been reported in the EIPStackGroup's OpENer software, specifically within the CreateMessageRouterRequestStructure function in the cipmessagerouter.c file. This issue leads to a use after free condition, allowing for potential remote exploitation. The vulnerability has been publicly disclosed and poses significant risks, as it allows attackers to manipulate the memory and execute arbitrary code. While the development team was notified of the issue early via issue tracking reports, there has been no response or patch released to address the problem as of now.

Affected Version(s)

OpENer 2.0

OpENer 2.1

OpENer 2.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-10703 - Proof of Concept

References

https://vuldb.com/vuln/368016
vdb-entrytechnical-description
https://vuldb.com/vuln/368016/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-10703
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

QvuQ_lkx (VulDB User)
VulDB CNA Team
.