External risk intelligence

Pexip Infinity Media Denial of Service Via Memory Corruption

CVE advisorySeverity: CRITICAL (CVSS 9.4)

CVE-2026-103109

Pexip Infinity is a video conferencing and communication platform designed to handle media streams. Its primary function involves internet-facing services such as virtual meeting rooms and gateway services, making it inherently exposed to public-facing media traffic by design in standard deployments.

Out-of-bounds Write

Pexip Infinity

before 38.239.0 to 39.140.0

Halo Surface Signal: 5 out of 5 — more likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A vulnerability has been identified in Pexip Infinity, a video conferencing and communication platform, that could allow an attacker to disrupt service through crafted media streams. While the direct business impact requires confirmation of relevance and exposure, the nature of the vulnerability necessitates a review of affected systems.

  • Disruption of communication services.
  • Affects internet-facing video conferencing.
  • Confirm exposure and assess impact.

Attack Path

How an attacker could exploit the issue

An attacker can target Pexip Infinity by sending specially crafted media streams over the network. This malicious input can cause the software to mishandle data, potentially leading to memory corruption or a crash that disrupts service.

  • No special access needed.
  • Vulnerable media processing.
  • Denial of service risk.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could affect the availability and integrity of Pexip Infinity services. A remote attacker could send specially crafted media streams to trigger memory corruption or a software abort, leading to a denial of service.

  • Service availability and integrity.
  • Through crafted media streams.
  • Potential for denial of service.

Operational Fix

Recommended remediation, mitigation, and detection steps

Technical leaders and system owners should engage application or platform teams responsible for Pexip Infinity deployments to confirm the scope of exposure and prioritize remediation efforts. The first practical step involves identifying all Pexip Infinity instances, assessing their accessibility and criticality, and then planning the appropriate response, which may include vendor coordination or phased maintenance.

  • Identify Pexip Infinity owners.
  • Verify external reachability and criticality.
  • Plan risk-based remediation actions.

Supplementary metadata

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

Frequently asked questions

What is Pexip Infinity?

Pexip Infinity is a software platform used for enterprise video conferencing and communication. It manages virtual meeting rooms and acts as a gateway to connect different video systems, handling real-time audio and video media streams across network environments.

What does CVE-2026-103109 mean?

This CVE describes a vulnerability where the software fails to properly validate input data within its media processing components. This weakness, classified as Out-of-bounds Write (CWE-787), allows a remote attacker to send malformed data that can cause memory corruption or force the application to stop working.

How can a media stream trigger this vulnerability?

The issue occurs when the software processes specially crafted media packets that exceed expected parameters. It is important to note that typical, legitimate video conferencing traffic does not trigger this error; it requires a malicious stream specifically designed to exploit the software's handling of data.

Is my Pexip Infinity instance at risk?

According to Halo Surface Signal, Pexip Infinity is often deployed as an internet-facing service to support remote meetings. If your instance is reachable from the public internet to accept media traffic, it faces a higher level of exposure to remote attackers compared to those isolated within a private network.

What are the first steps to address this CVE?

Begin by identifying all running instances of Pexip Infinity in your environment to determine which versions are affected. Once you have an inventory, coordinate with your technical teams to verify the accessibility of these systems and plan updates according to the vendor's official security guidance.

References