CVE-2025-54278 is a heap-based buffer overflow vulnerability identified in Adobe Bridge, specifically affecting versions 14.1.8, 15.1.1, and earlier. This vulnerability arises from improper handling of memory buffers when processing certain file inputs, allowing an attacker to overflow a heap buffer. The consequence of this overflow is memory exposure, which can lead to disclosure of sensitive information stored in the application's memory space. Exploitation requires an attacker to craft a malicious file that, when opened by a victim using the vulnerable Adobe Bridge version, triggers the overflow condition. Notably, exploitation requires user interaction (opening the malicious file), but no prior authentication or elevated privileges are necessary, making it accessible to remote attackers who can trick users into opening malicious content. The vulnerability affects confidentiality (C) with a high impact, but does not affect integrity (I) or availability (A). The CVSS v3.1 score is 5.5 (medium), reflecting the limited attack vector (local via user interaction) and the absence of privilege requirements. Currently, no public exploits or patches are available, and the vulnerability was published on October 15, 2025. The CWE classification is CWE-122, indicating a heap-based buffer overflow. This type of vulnerability can be leveraged for information disclosure, which may facilitate further attacks or data leakage.

For European organizations, the primary impact of CVE-2025-54278 is the potential exposure of sensitive information residing in memory when a user opens a malicious file in Adobe Bridge. This can lead to leakage of confidential data, including intellectual property, credentials, or other sensitive content handled by the application. Organizations in sectors relying heavily on Adobe Bridge for digital asset management, such as media, advertising, design, and publishing, face increased risk. The requirement for user interaction limits large-scale automated exploitation but increases the risk of targeted phishing or social engineering attacks. Data privacy regulations in Europe, such as GDPR, impose strict obligations on protecting personal and sensitive data, so any leakage could result in regulatory penalties and reputational damage. Additionally, the vulnerability could be a stepping stone for attackers to gain further access or conduct espionage. The absence of known exploits currently reduces immediate risk, but the presence of a public vulnerability disclosure necessitates proactive mitigation.

1. Educate users about the risks of opening files from untrusted or unknown sources, emphasizing caution with email attachments and downloads. 2. Implement strict email filtering and endpoint security controls to detect and block malicious files targeting Adobe Bridge. 3. Restrict Adobe Bridge usage to trusted environments and limit file sharing from external or unverified sources. 4. Monitor system and application logs for unusual activity related to Adobe Bridge file handling. 5. Employ application whitelisting and sandboxing techniques to isolate Adobe Bridge processes and reduce impact of potential exploitation. 6. Prepare for rapid deployment of official patches from Adobe once released; subscribe to Adobe security advisories. 7. Consider temporary disabling or restricting Adobe Bridge usage in high-risk environments until patches are available. 8. Conduct regular vulnerability assessments and penetration testing focusing on client-side applications like Adobe Bridge to identify potential exploitation paths.