CVE-2025-64776 in Affinity
Summary
by MITRE • 03/17/2026
An out-of-bounds read vulnerability exists in the EMF functionality of Canva Affinity. By using a specially crafted EMF file, an attacker could exploit this vulnerability to perform an out-of-bounds read, potentially leading to the disclosure of sensitive information.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 03/21/2026
The vulnerability identified as CVE-2025-64776 represents a critical out-of-bounds read flaw within the EMF (Enhanced Metafile) processing component of Canva Affinity software. This type of vulnerability falls under the broader category of memory safety issues that can severely compromise system integrity and data confidentiality. The affected EMF functionality processes vector graphics files that are commonly used in desktop publishing and graphic design applications, making this vulnerability particularly concerning given the widespread use of such file formats in professional environments.
The technical implementation of this vulnerability stems from inadequate bounds checking during the parsing of EMF file structures. When Canva Affinity encounters a specially crafted EMF file, the application fails to properly validate array indices or buffer limits before accessing memory locations. This flaw allows an attacker to manipulate the file structure in such a way that subsequent memory reads extend beyond allocated buffer boundaries, potentially accessing adjacent memory regions containing sensitive data. The vulnerability manifests specifically within the EMF parsing routines where the software attempts to interpret and render vector graphics, creating a path for malicious input to trigger unintended memory access patterns.
The operational impact of CVE-2025-64776 extends beyond simple information disclosure, as the out-of-bounds read could potentially expose confidential information stored in adjacent memory locations. This includes but is not limited to user credentials, session tokens, application configuration data, or even other users' personal information if the application maintains such data in contiguous memory segments. Attackers could leverage this vulnerability to gain insights into the application's internal state, potentially enabling more sophisticated attacks such as privilege escalation or further exploitation of related vulnerabilities. The remote nature of this attack vector means that adversaries could exploit the vulnerability without requiring physical access to the target system.
From a cybersecurity perspective, this vulnerability aligns with CWE-129, which specifically addresses insufficient validation of length of input buffers, and represents a classic example of memory safety issues that have been extensively documented in the security community. The ATT&CK framework categorizes this type of vulnerability under T1059.007 for command and scripting interpreter, as attackers might use the information disclosure to gain insights into the target environment and plan further exploitation. Organizations using Canva Affinity should consider this vulnerability as part of their broader threat landscape, particularly in environments where sensitive design assets or user information might be processed through the affected functionality.
Mitigation strategies for CVE-2025-64776 should include immediate patch application from the vendor, as well as network-level controls to restrict access to potentially malicious EMF files. Organizations should implement strict file validation policies, particularly for file types processed through vector graphics rendering components. The principle of least privilege should be enforced when processing user-uploaded files, and additional monitoring should be implemented to detect anomalous file access patterns. Security teams should also consider implementing sandboxing mechanisms for EMF file processing and establish incident response procedures specifically addressing memory safety vulnerabilities in graphics processing components. Regular security assessments of third-party libraries and components that handle vector graphics formats should be conducted to identify similar vulnerabilities that might exist in other applications within the organization's attack surface.