EUVD-2025-20991CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
3Description
A maliciously crafted RTE file, when parsed through Autodesk Revit, can force a Heap-Based Overflow vulnerability. A malicious actor can leverage this vulnerability to cause a crash, read sensitive data, or execute arbitrary code in the context of the current process.
Analysis
CVE-2025-5040 is a heap-based buffer overflow vulnerability in Autodesk Revit's RTE file parser that allows local attackers with user interaction to trigger memory corruption. Successful exploitation enables arbitrary code execution, sensitive data theft, or application denial of service within the Revit process context. This vulnerability requires a maliciously crafted RTE file and user action to open it, making it a moderate-to-high priority for organizations using Revit for design workflows.
Technical Context
The vulnerability exists in Autodesk Revit's RTE (Revit Template Exchange or similar binary format) file parsing logic, which fails to properly validate buffer boundaries during deserialization. CWE-122 (Heap-based Buffer Overflow) indicates the vulnerability occurs in dynamically allocated memory rather than the stack, potentially allowing attackers to corrupt heap metadata, bypass security mechanisms, or hijack object pointers. The RTE parser likely lacks adequate bounds checking when reading variable-length fields or nested structures from untrusted input, a common issue in legacy CAD file format parsers. Affected CPE would be: cpe:2.3:a:autodesk:revit:*:*:*:*:*:*:*:* (all versions until patched). The vulnerability stems from unsafe memory operations common in C/C++-based CAD applications handling complex binary formats.
Affected Products
Autodesk Revit (specific versions not provided in CVE description; assume recent versions up to patch date). CPE: cpe:2.3:a:autodesk:revit:*:*:*:*:*:*:*:* (all architectures: Windows x86_64, x86). RTE file format is Revit-specific. Revit versions 2024, 2023, 2022, and earlier likely affected unless vendor advisory specifies otherwise. Check Autodesk Security Advisory for exact version ranges. Related products sharing RTE parsing code (e.g., Revit Server, Revit plugins using RTE libraries) may also be vulnerable.
Remediation
1. IMMEDIATE: Disable opening untrusted RTE files; educate users not to open RTE files from untrusted sources (email, external file shares). 2. PATCH: Apply Autodesk's security update for Revit once released (check Autodesk Security Advisories at https://www.autodesk.com/trust/security-advisories). Patch version not specified in description; contact Autodesk support for availability. 3. WORKAROUND: Validate RTE files programmatically before opening (requires custom tools or Autodesk guidance). 4. DETECTION: Monitor for suspicious Revit crashes or unexpected memory errors in logs; implement file integrity checking for RTE repositories. 5. NETWORK: Restrict RTE file distribution through email filters if possible; use centralized, scanned file repositories.
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External POC / Exploit Code
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