Heap Buffer Overflow in FFmpeg's Jpeg2000 Decoder Affects Multiple Platforms

CVE-2025-9951

What is CVE-2025-9951?

CVE-2025-9951 is a critical vulnerability found in the FFmpeg library, specifically within its JPEG2000 decoder component. FFmpeg is an essential open-source project widely used for handling multimedia data, including video and audio encoding, decoding, transcoding, and streaming. The vulnerability manifests as a heap buffer overflow, which is a serious programming error allowing the writing of data past the end of a buffer that can lead to corruption of data and execution of arbitrary code. This can pose substantial risks to organizations utilizing FFmpeg in their applications and services, as attackers may exploit this flaw to gain unauthorized remote access or disrupt system functionality. Target platforms affected by this vulnerability vary, heightening the potential reach and impact across different operating systems and configurations.

Potential impact of CVE-2025-9951

1. Remote Code Execution: The primary risk associated with CVE-2025-9951 is the possibility of remote code execution. An attacker could potentially leverage this vulnerability to execute malicious code on affected systems, compromising their integrity and security.

2. Denial of Service: Beyond unauthorized access, the vulnerability could facilitate denial of service (DoS) attacks, where attackers can crash or destabilize applications utilizing the FFmpeg library, leading to the interruption of services and loss of availability.

3. Widespread Applicability: Since FFmpeg is a foundational tool integrated into numerous software applications and services across various platforms, the vulnerability has a broad impact. This widespread usage increases the urgency for organizations to address the potential risks associated with this flaw, as attack vectors can proliferate across multiple environments.

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