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TI-2021-21358 Aliases CVE-2021-46586GHSA-5454-hcjq-mcjq

Out-of-bounds write in Bentley MicroStation CONNECT

Priority LOW 38CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. 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 3DS files. Crafted data in a 3DS 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-15380.

Why it matters now

EPSS 0.02093 81st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
BentleyMicroStation CONNECT10.16.0.80—No fix listedCNA
  • MicroStation CONNECT VendorBentley Affected 10.16.0.80 Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:bentley:microstation:*:*:*:*:*:*:*:*before 10.16.02VulnerableBentley
cpe:2.3:a:bentley:microstation_connect:10.16.0.80:*:*:*:*:*:*:*10.16.0.80VulnerableBentley
cpe:2.3:a:bentley:view:*:*:*:*:*:*:*:*before 10.16.02VulnerableBentley
  • cpe:2.3:a:bentley:microstation:*:*:*:*:*:*:*:* Versions before 10.16.02 Vulnerable ·Bentley
  • cpe:2.3:a:bentley:microstation_connect:10.16.0.80:*:*:*:*:*:*:* Versions 10.16.0.80 Vulnerable ·Bentley
  • cpe:2.3:a:bentley:view:*:*:*:*:*:*:*:* Versions before 10.16.02 Vulnerable ·Bentley

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-46586
  2. 2026-10-03 Alias added: GHSA-5454-hcjq-mcjq

References

Advisory 2

  • TI-2021-21347 Use after free in Bentley MicroStation CONNECT CVSS 3.1HIGH 7.8
  • TI-2022-11292 Out-of-bounds read in Bentley MicroStation CONNECT CVSS 3.1HIGH 7.8
  • TI-2022-11291 Out-of-bounds write in Bentley MicroStation CONNECT CVSS 3.1HIGH 7.8
  • TI-2022-11289 Out-of-bounds write in Bentley MicroStation CONNECT CVSS 3.1HIGH 7.8
  • TI-2022-11288 Out-of-bounds write in Bentley MicroStation CONNECT CVSS 3.1HIGH 7.8
  • TI-2022-11287 Out-of-bounds write in Bentley MicroStation CONNECT CVSS 3.1HIGH 7.8
See all 210 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences