CVE-2025-64301 is an out-of-bounds write vulnerability classified under CWE-787 affecting the EMF (Enhanced Metafile) processing functionality in Canva Affinity version 3.0.1.3808. The vulnerability arises when the application processes a specially crafted EMF file, which causes the software to write data outside the bounds of allocated memory buffers. This memory corruption can lead to arbitrary code execution, allowing an attacker to execute malicious code within the context of the affected application. The vulnerability requires the victim to open a malicious EMF file, implying user interaction is necessary, and the attack vector is local (AV:L). No privileges are required (PR:N), but the attacker must convince the user to open the file (UI:R). The vulnerability impacts confidentiality, integrity, and availability, as arbitrary code execution can lead to data theft, system compromise, or denial of service. Although no patches are currently linked, the vulnerability is publicly disclosed and assigned a CVSS v3.1 score of 7.8, indicating high severity. No known exploits have been reported in the wild yet, but the potential for exploitation exists given the nature of the flaw. The vulnerability affects a widely used creative software product, making it a significant concern for organizations relying on Canva Affinity for design and content creation workflows.

The impact of CVE-2025-64301 is substantial for organizations using Canva Affinity, especially in creative industries where the software is integral to daily operations. Successful exploitation can lead to arbitrary code execution, allowing attackers to gain control over affected systems, steal sensitive design files, intellectual property, or deploy further malware. This compromises confidentiality, integrity, and availability of systems and data. Since the vulnerability requires user interaction to open a malicious EMF file, phishing or social engineering campaigns could be used to deliver the exploit. The local attack vector limits remote exploitation but does not eliminate risk, especially in environments where users frequently exchange files. The lack of current patches increases exposure time, and the absence of known exploits does not preclude future attacks. Organizations may face operational disruptions, data breaches, and reputational damage if exploited. The vulnerability also poses risks in environments with shared workstations or insufficient endpoint protections.

To mitigate CVE-2025-64301, organizations should implement the following specific measures: 1) Restrict the opening of EMF files from untrusted or unknown sources within Canva Affinity until a vendor patch is released. 2) Employ application whitelisting and sandboxing techniques to isolate Canva Affinity processes and limit the impact of potential exploitation. 3) Educate users about the risks of opening unsolicited or suspicious EMF files, emphasizing cautious handling of email attachments and downloads. 4) Monitor and control file sharing channels to prevent distribution of malicious EMF files. 5) Use endpoint detection and response (EDR) tools to detect anomalous behaviors indicative of exploitation attempts. 6) Regularly back up critical design files and maintain incident response plans tailored to software compromise scenarios. 7) Once available, promptly apply vendor patches or updates addressing this vulnerability. 8) Consider disabling or limiting EMF file support in Canva Affinity if feasible within operational requirements. These targeted actions go beyond generic advice by focusing on the specific attack vector and software context.