CVE-2021-34879
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 J2K files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14832.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
A use-after-free vulnerability in Bentley View 10.15.0.75 when parsing J2K files allows remote attackers to execute arbitrary code via a malicious page or file.
Vulnerability
This vulnerability affects Bentley View version 10.15.0.75, as well as earlier versions prior to 10.16.02.* [2]. The bug resides in the parsing of J2K (JPEG 2000) files. The issue results from the lack of validating the existence of an object prior to performing operations on the object, leading to a use-after-free condition [1][2].
Exploitation
An attacker can exploit this vulnerability by convincing a target user to visit a malicious webpage or open a specially crafted J2K file [1][2]. No authentication is required, but user interaction is necessary. The attack can be launched remotely, targeting the user's local execution environment [1][2].
Impact
Successful exploitation allows the attacker to execute arbitrary code in the context of the current process [1]. This can lead to full compromise of confidentiality, integrity, and availability, as reflected in the CVSS score of 7.8 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) [1][2].
Mitigation
Bentley has addressed this vulnerability in version 10.16.02.* of Bentley View and MicroStation [2]. Users should update to the latest version. As a general best practice, only open J2K files from trusted sources [2].
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-2021-0006mitrex_refsource_MISC
- www.zerodayinitiative.com/advisories/ZDI-21-1468/mitrex_refsource_MISC
News mentions
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