CVE-2021-46652
Description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of DGN files. Crafted data in a DGN file can trigger a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-15538.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
A heap out-of-bounds write in Bentley View's DGN file parsing allows remote code execution via a crafted file.
Vulnerability
An out-of-bounds write vulnerability exists in Bentley View version 10.15.0.75 and prior versions. The flaw occurs when parsing a specially crafted DGN file, where a write past the end of an allocated buffer can be triggered [1][2]. This vulnerability is part of a larger set of out-of-bounds issues affecting MicroStation and MicroStation-based applications, all disclosed in Bentley advisory BE-2021-0009 [2].
Exploitation
To exploit this vulnerability, an attacker must convince a user to open a maliciously crafted DGN file or visit a page that hosts such a file. No authentication or special network position is required; the attack is local to the user's machine. The flaw is reachable through the DGN parsing code path with no special configuration [1][2].
Impact
Successful exploitation allows the attacker to execute arbitrary code in the context of the current process. Given the CVSS score of 7.8 and the vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, the impact is a complete compromise of confidentiality, integrity, and availability, but within the scope of the user session [1][2].
Mitigation
Bentley has mitigated this vulnerability in Bentley View version 10.16.02.* and later [2]. Users should update to the latest version. As a general best practice, only open DGN files from trusted sources [2]. No workaround for unpatched versions is provided by the vendor.
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- Range: = 10.15.0.75
- Bentley/Viewv5Range: 10.15.0.75
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- www.bentley.com/en/common-vulnerability-exposure/BE-2021-0009mitrex_refsource_MISC
- www.zerodayinitiative.com/advisories/ZDI-22-239/mitrex_refsource_MISC
News mentions
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