CVE-2025-47183 is a vulnerability identified in the GStreamer multimedia framework, specifically affecting versions up to 1.26.1. The issue resides in the isomp4 plugin's qtdemux_parse_tree function, which is responsible for parsing MP4 files. The vulnerability manifests as a heap-based buffer over-read, where the function may read beyond the allocated heap buffer boundary while processing crafted MP4 content. This out-of-bounds read can lead to information disclosure, as sensitive memory contents adjacent to the buffer may be exposed to an attacker. The vulnerability does not appear to allow code execution or privilege escalation directly but can leak potentially sensitive data from the process memory. No CVSS score has been assigned yet, and there are no known exploits in the wild at this time. The lack of patch links suggests that a fix may not have been publicly released as of the publication date (August 7, 2025). The vulnerability affects the parsing of MP4 files, which are widely used multimedia container formats, and GStreamer is a popular open-source multimedia framework used in many Linux distributions, embedded systems, and applications for audio/video processing and streaming. Attackers could exploit this vulnerability by convincing a user or system to process a maliciously crafted MP4 file, potentially leading to unintended information leakage from the affected application or system memory.

For European organizations, the impact of CVE-2025-47183 could be significant in environments where GStreamer is used extensively for media processing, streaming services, or multimedia applications. Information disclosure vulnerabilities can lead to leakage of sensitive data such as cryptographic keys, user credentials, or proprietary information residing in memory. This could facilitate further attacks such as privilege escalation or lateral movement if attackers gain insights into the system's internal state. Organizations in media, telecommunications, broadcasting, and embedded device manufacturing sectors are particularly at risk. Additionally, public-facing services that process user-uploaded MP4 content could be targeted to extract sensitive information. The vulnerability could also affect cloud service providers and SaaS platforms that incorporate GStreamer for media handling, potentially impacting data privacy compliance under GDPR if personal data is exposed. Although no active exploits are known, the widespread use of GStreamer in European IT infrastructure means that the vulnerability should be treated seriously to prevent future exploitation.

To mitigate CVE-2025-47183, European organizations should: 1) Monitor official GStreamer repositories and security advisories for patches addressing this vulnerability and apply updates promptly once available. 2) Implement strict input validation and sanitization for all MP4 files processed by applications using GStreamer, including sandboxing or isolating media processing components to limit the impact of potential exploitation. 3) Employ runtime protections such as Address Space Layout Randomization (ASLR) and Data Execution Prevention (DEP) to reduce the risk of memory corruption exploitation. 4) Restrict the acceptance of MP4 files from untrusted or unauthenticated sources, especially in public-facing services. 5) Conduct code audits and penetration testing focused on media processing workflows to identify and remediate similar vulnerabilities proactively. 6) Use application-layer firewalls or intrusion detection systems capable of inspecting media file uploads for anomalies. 7) Educate developers and system administrators about secure handling of multimedia content and the risks of buffer over-read vulnerabilities.