CVE-2025-62500 Overview
An out-of-bounds read vulnerability exists in the EMF (Enhanced Metafile) 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. This vulnerability requires user interaction, as the victim must open a malicious EMF file for exploitation to occur.
Critical Impact
Exploitation of this vulnerability could allow attackers to read sensitive memory contents beyond allocated buffers, potentially exposing confidential data or enabling further attacks through information disclosure.
Affected Products
- Canva Affinity for Windows (all vulnerable versions)
- Applications utilizing EMF file parsing in Canva Affinity
Discovery Timeline
- 2026-03-17 - CVE-2025-62500 published to NVD
- 2026-03-19 - Last updated in NVD database
Technical Details for CVE-2025-62500
Vulnerability Analysis
This vulnerability is classified as CWE-125 (Out-of-bounds Read), a memory corruption flaw that occurs when the application reads data past the end or before the beginning of the intended buffer. In the context of Canva Affinity's EMF processing functionality, the parser fails to properly validate boundaries when processing specially crafted EMF file structures.
The attack requires local access to the system and user interaction—specifically, the victim must open a malicious EMF file. Once opened, the vulnerable parsing routine reads beyond the allocated memory boundaries, potentially exposing sensitive data stored in adjacent memory regions. This could include application secrets, user credentials, or other confidential information that could be leveraged for subsequent attacks.
The impact of successful exploitation includes both confidentiality and availability concerns, as the out-of-bounds read could not only leak sensitive data but also cause application crashes or instability.
Root Cause
The root cause of CVE-2025-62500 lies in insufficient boundary validation within Canva Affinity's EMF file parsing routines. When processing EMF file records, the application fails to properly verify that read operations remain within the bounds of allocated memory buffers. This allows a specially crafted EMF file with malformed record lengths or structure definitions to trigger reads beyond intended memory regions.
Attack Vector
The attack vector for this vulnerability is local, requiring an attacker to deliver a malicious EMF file to the target system. The exploitation chain typically involves:
File Delivery: The attacker crafts a malicious EMF file containing manipulated header values or record structures designed to trigger the out-of-bounds read condition.
User Interaction: The victim opens the malicious EMF file using Canva Affinity, either directly or through an application that embeds Affinity's EMF parsing functionality.
Memory Disclosure: Upon parsing the malformed EMF structures, the application reads beyond buffer boundaries, potentially exposing sensitive memory contents.
The vulnerability mechanism involves crafting EMF file structures with manipulated size fields or record counts that cause the parser to read beyond allocated buffer boundaries. For detailed technical information, refer to the Talos Intelligence Vulnerability Report.
Detection Methods for CVE-2025-62500
Indicators of Compromise
- Unexpected EMF files appearing in user directories or temporary folders
- Canva Affinity application crashes when opening specific EMF files
- Unusual memory access patterns or segmentation faults in application logs
- Suspicious EMF files received via email or downloaded from untrusted sources
Detection Strategies
- Monitor for anomalous file access patterns involving EMF files from untrusted sources
- Implement endpoint detection rules to identify Canva Affinity parsing unusual or malformed EMF structures
- Deploy file integrity monitoring to detect introduction of suspicious EMF files
- Utilize SentinelOne's behavioral AI to detect abnormal memory access patterns during EMF file processing
Monitoring Recommendations
- Enable detailed logging for Canva Affinity application activities
- Monitor for application crashes or exceptions related to EMF file processing
- Track file downloads and email attachments containing EMF files from external sources
- Implement network monitoring to detect potential data exfiltration following exploitation
How to Mitigate CVE-2025-62500
Immediate Actions Required
- Apply vendor security patches for Canva Affinity as they become available
- Restrict opening EMF files from untrusted or unknown sources
- Educate users about the risks of opening EMF files received via email or downloaded from the internet
- Consider disabling or restricting EMF file associations in Canva Affinity until patches are applied
Patch Information
Canva has acknowledged this vulnerability. Organizations should monitor the Canva Trust Update page for official security patches and updates. Apply patches immediately upon availability to remediate CVE-2025-62500.
Workarounds
- Block or quarantine EMF files at email gateways and web proxies until patches are applied
- Implement application whitelisting to prevent execution of untrusted files
- Use virtual machines or sandboxed environments when opening EMF files from untrusted sources
- Configure endpoint protection to scan and quarantine suspicious EMF files before they reach end users
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
