CVE-2025-62403 is a security vulnerability classified as CWE-125 (Out-of-bounds Read) found in the Enhanced Metafile (EMF) processing component of Canva Affinity, specifically version 3.0.1.3808. The vulnerability arises when the software processes a specially crafted EMF file, causing it to read memory outside the intended buffer boundaries. This out-of-bounds read can lead to the exposure of sensitive information stored in adjacent memory regions, potentially leaking confidential data to an attacker. The vulnerability does not allow code execution or modification of data but compromises confidentiality by unauthorized data disclosure. Exploitation requires the victim to open or interact with a malicious EMF file, implying user interaction is necessary. The attack vector is local (AV:L), meaning the attacker must have the ability to deliver the malicious file to the victim, such as via email, file sharing, or removable media. No privileges are required (PR:N), and the attack complexity is low (AC:L), making exploitation feasible if the user is tricked into opening the file. The vulnerability has a CVSS v3.1 base score of 6.1, reflecting medium severity with high confidentiality impact, no integrity impact, and low availability impact. As of the publication date, no known exploits in the wild have been reported, and no patches have been linked, indicating that remediation may require vendor action or workaround implementation. The vulnerability affects a widely used graphic design product, increasing its potential impact across various sectors.

The primary impact of CVE-2025-62403 is the unauthorized disclosure of sensitive information due to out-of-bounds memory reads. Organizations using Canva Affinity in environments where sensitive or proprietary data is handled risk exposure if attackers can deliver malicious EMF files to users. This could lead to leakage of confidential business information, intellectual property, or personal data, potentially resulting in reputational damage, regulatory penalties, or competitive disadvantage. Since exploitation requires user interaction and local file delivery, the risk is mitigated somewhat by user awareness and secure file handling policies. However, in sectors with high reliance on graphic design tools and frequent file exchanges, such as marketing, media, and creative industries, the vulnerability could be leveraged in targeted attacks or phishing campaigns. The lack of integrity or availability impact limits the threat to data confidentiality rather than system disruption or data manipulation. The absence of known exploits in the wild reduces immediate risk but does not preclude future exploitation once the vulnerability becomes publicly known.

To mitigate CVE-2025-62403, organizations should implement several specific measures: 1) Restrict or monitor the receipt and opening of EMF files from untrusted or unknown sources, especially via email or file sharing platforms. 2) Educate users about the risks of opening unsolicited or suspicious graphic files and encourage verification before interaction. 3) Employ endpoint security solutions capable of detecting and blocking malicious EMF files or anomalous file behaviors. 4) Use application whitelisting or sandboxing techniques to isolate Canva Affinity or limit its access to sensitive data during file processing. 5) Regularly check for vendor updates or patches addressing this vulnerability and apply them promptly once available. 6) Consider disabling or restricting EMF file support in Canva Affinity if not required for business operations. 7) Implement network-level controls to scan and filter potentially malicious files before delivery to end users. These targeted actions go beyond generic advice by focusing on the specific attack vector and file type involved.