CVE-2021-25177
Description
An issue was discovered in Open Design Alliance Drawings SDK before 2021.11. A Type Confusion issue exists when rendering malformed .DXF and .DWG files. This can allow attackers to cause a crash, potentially enabling a denial of service attack (Crash, Exit, or Restart).
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
A type confusion vulnerability in Open Design Alliance Drawings SDK before 2021.11 allows remote code execution via malformed DXF/DWG files, leading to denial of service or arbitrary code execution.
Vulnerability
A type confusion vulnerability exists in Open Design Alliance Drawings SDK versions prior to 2021.11 when parsing malformed .DXF and .DWG files [1]. The issue results from improper validation of user-supplied values, leading to an untrusted pointer dereference [2]. This affects products using the SDK, such as Siemens JT2Go [2].
Exploitation
An attacker can exploit this by convincing a user to open a specially crafted DXF or DWG file, either via a malicious webpage or email attachment [2]. No authentication is required, but user interaction is necessary. The vulnerability is triggered during the rendering process.
Impact
Successful exploitation can cause a crash, exit, or restart of the application, resulting in denial of service [1]. Additionally, due to the untrusted pointer dereference, an attacker may achieve arbitrary code execution in the context of the current process, leading to full compromise of confidentiality, integrity, and availability [2].
Mitigation
The vulnerability is fixed in Open Design Alliance Drawings SDK version 2021.11 [1]. Users should update to this version or later. For affected products like Siemens JT2Go, apply vendor patches as provided. No workarounds are documented.
AI Insight generated on May 27, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
2- Open Design Alliance/Drawings SDKdescription
- Range: <2021.11
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
4- cert-portal.siemens.com/productcert/pdf/ssa-155599.pdfmitrex_refsource_CONFIRM
- cert-portal.siemens.com/productcert/pdf/ssa-663999.pdfmitrex_refsource_CONFIRM
- www.opendesign.com/security-advisoriesmitrex_refsource_MISC
- www.zerodayinitiative.com/advisories/ZDI-21-219/mitrex_refsource_MISC
News mentions
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