CVE-2026-17550 in AutoCAD
Summary
by MITRE • 07/29/2026
A maliciously crafted DWG or DXF file, when parsed through Autodesk AutoCAD, can force an Out-of-Bounds Read vulnerability. A malicious actor can leverage this vulnerability to cause a crash or disclose sensitive information.
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Analysis
by VulDB Data Team • 07/29/2026
This vulnerability represents a critical memory safety issue affecting Autodesk AutoCAD software that processes computer-aided design files in DWG and DXF formats. The flaw manifests as an out-of-bounds read condition when the application parses malformed input files, specifically crafted to exploit improper boundary checking during file parsing operations. Such vulnerabilities typically arise from insufficient input validation mechanisms that fail to properly verify array indices or buffer limits before accessing memory locations. The technical implementation involves the AutoCAD application's internal parsing engine encountering malformed data structures within the design files that trigger unexpected memory access patterns beyond allocated boundaries.
The operational impact of this vulnerability extends beyond simple application instability to potential information disclosure risks that could expose sensitive system data. When exploited, the out-of-bounds read condition can cause the AutoCAD application to crash or terminate unexpectedly, disrupting critical design workflows and potentially leading to data loss. More concerning is the possibility of information disclosure where attackers might extract memory contents from adjacent memory locations, potentially revealing sensitive data such as encryption keys, user credentials, or system memory structures. This vulnerability falls under the CWE-129 category of Improper Validation of Array Index, which specifically addresses issues where array indices are not properly validated before use, and relates to the broader class of memory safety vulnerabilities that have been extensively documented in cybersecurity literature.
The attack vector for this vulnerability requires a malicious actor to craft specific DWG or DXF files that contain malformed data structures designed to trigger the out-of-bounds read condition. These crafted files can be delivered through various means including email attachments, file sharing platforms, or compromised websites where unsuspecting users might open them with AutoCAD. The exploitation process typically involves preparing a file with carefully constructed headers and data sections that cause the parsing engine to access memory locations beyond its intended boundaries. This type of vulnerability is particularly dangerous in enterprise environments where AutoCAD is widely used for critical engineering and architectural work, as it can be leveraged for both denial-of-service attacks and potential information gathering operations.
Security practitioners should implement multiple layers of defense to protect against this vulnerability including immediate patching of affected AutoCAD versions, network segmentation to limit file sharing between trusted and untrusted domains, and implementation of automated file scanning solutions that can detect potentially malicious design files. Additionally, user awareness training should emphasize the importance of only opening design files from trusted sources and implementing strict file validation policies before processing any external CAD files. The vulnerability demonstrates the importance of robust input validation and memory safety practices in software development, aligning with defensive techniques recommended in the MITRE ATT&CK framework for protecting against persistence and privilege escalation vectors through file execution and exploitation of software vulnerabilities.
Organizations should prioritize immediate remediation efforts by updating to patched versions of AutoCAD that address this specific out-of-bounds read condition, while also implementing monitoring solutions to detect potential exploitation attempts. The vulnerability highlights the ongoing challenge of securing complex software applications that process rich media formats and emphasizes the need for continuous security assessments and vulnerability management programs. Security teams should also consider implementing application whitelisting policies that restrict execution of unauthorized AutoCAD versions or custom file processing scripts that could be leveraged to exploit this and similar memory safety vulnerabilities in other software components.