CVE-2025-61843 is an out-of-bounds read vulnerability classified under CWE-125 affecting Adobe Format Plugins version 1.1.1 and earlier. This vulnerability allows an attacker to read memory beyond the intended buffer boundaries, potentially exposing sensitive information stored in memory. The attack vector requires the victim to open a maliciously crafted file, making user interaction mandatory for exploitation. The vulnerability does not allow code execution or modification of data but can disclose confidential information, which could include credentials, cryptographic keys, or other sensitive data residing in memory. The CVSS v3.1 base score is 5.5, reflecting a medium severity with the vector metrics AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N, meaning the attack requires local access, low complexity, no privileges, user interaction, and impacts confidentiality with no effect on integrity or availability. No patches or exploits are currently publicly available, but the vulnerability is officially published and reserved by Adobe. This vulnerability is relevant for environments where Adobe Format Plugins are used to process various document formats, potentially exposing sensitive information if malicious files are opened.

For European organizations, the primary impact of CVE-2025-61843 is the potential disclosure of sensitive information due to out-of-bounds memory reads. This can lead to leakage of confidential data such as personal information, intellectual property, or security credentials, which could facilitate further attacks or compliance violations under GDPR. Since exploitation requires user interaction and opening a malicious file, the risk is higher in environments with frequent document exchanges, such as legal, financial, and governmental sectors. The vulnerability does not affect system integrity or availability, so direct disruption is unlikely. However, the confidentiality breach could result in reputational damage, regulatory fines, and increased risk of targeted follow-on attacks. The absence of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits once patches are released or if the vulnerability is reverse-engineered.

1. Monitor Adobe's official channels for patches addressing CVE-2025-61843 and apply them promptly once available. 2. Until patches are released, restrict the use of Adobe Format Plugins to trusted files and sources only, employing strict file validation and sandboxing where possible. 3. Implement endpoint security solutions with advanced file scanning and behavioral analysis to detect and block malicious files attempting to exploit this vulnerability. 4. Educate users about the risks of opening files from untrusted or unknown sources to reduce the likelihood of successful exploitation. 5. Employ network segmentation and least privilege principles to limit the impact of any potential compromise. 6. Consider disabling or limiting the use of Adobe Format Plugins in environments where they are not essential. 7. Use Data Loss Prevention (DLP) tools to monitor for unusual data access patterns that might indicate memory disclosure attempts.