CVE-2026-103109 in Infinity
Summary
by MITRE • 09/30/2026
Pexip Infinity before 38.2, plus 39.0, 39.1 and 40.0, is affected by improper input validation in the media implementation that allows a remote attacker to trigger memory corruption or a software abort resulting in a denial of service. A crafted media stream may result in a controlled abort during processing, and has the potential to achieve memory corruption.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 09/30/2026
The vulnerability identified in Pexip Infinity versions prior to 38.2 as well as specific releases within the 39.x and 40.x series stems from inadequate input validation mechanisms embedded within the media handling subsystem. This security flaw allows a remote, unauthenticated attacker to exploit weaknesses in how the application processes incoming multimedia streams. By constructing a specially crafted media stream that deviates from expected protocol standards or contains malformed data structures, an adversary can trigger improper memory management operations during the decoding and processing phases. The core technical deficiency lies in the failure of the software to adequately sanitize or verify the integrity of input parameters before they are passed deeper into the application logic for execution.
When a malicious media stream is received, the flawed validation routines fail to detect anomalous data patterns that would typically indicate corruption or invalid formatting. This oversight leads directly to memory corruption events, such as buffer overflows or use-after-free conditions, depending on the specific internal state of the processor at the time of exploitation. In many instances, rather than resulting in arbitrary code execution, this improper handling manifests as a controlled software abort. The application detects an illegal operation or critical error condition and terminates its own process to prevent further damage, which effectively results in a denial of service for all users relying on that specific Pexip Infinity node for conferencing services.
The operational impact of this vulnerability is significant within enterprise communication environments where high availability is paramount. A successful exploitation allows an attacker to disrupt video conferencing sessions, cause system crashes, or force repeated restarts of the media processing components. This denial of service condition can lead to substantial business disruption, preventing remote collaboration and potentially causing data loss if active calls are abruptly terminated without proper session state preservation. Furthermore, while the primary observed impact is a crash, the underlying memory corruption aspect poses a latent risk for more severe exploitation vectors if similar flaws exist elsewhere in the codebase or under different processing conditions that do not trigger an immediate abort.
From a classification perspective, this vulnerability aligns with CWE-20 Improper Input Validation and CWE-119 Memory Corruption vulnerabilities such as buffer overflows. In terms of tactical mapping within the MITRE ATT&CK framework, this behavior corresponds to T1499 Endpoint Denial of Service, where an attacker disrupts access to an asset by exhausting resources or crashing services. The attack vector is classified as Network-based with no required user interaction, making it particularly dangerous in environments exposed to untrusted networks.
To mitigate the risks associated with this vulnerability, organizations running affected versions of Pexip Infinity must prioritize immediate patching. Upgrading to version 38.2 and later, or specifically addressing the flaws in versions 39.0, 39.1, and 40.0 by applying the vendor-released security patches is the most effective remediation strategy. Until updates are applied, network-level controls such as deep packet inspection firewalls should be configured to inspect media streams for anomalies or malformed packets that resemble known exploit patterns. Additionally, restricting access to Pexip Infinity management and media interfaces to trusted IP ranges can reduce the attack surface available to remote adversaries seeking to trigger these denial of service conditions.