CVE-2022-40201

Arbitrary code execution via DGN parser overflow

Published Jan 6, 2023 · Updated Feb 13, 2025

Stack-based buffer overflow in Bentley Systems MicroStation Connect 10.17.0.209 and earlier allows attackers to execute code via a crafted DGN file. The DGN parser mishandles malformed design-file data and overflows a stack-based buffer while opening the file. Exploitation requires a user to open the file and runs code in the context of the current MicroStation process.

CVSS severity7.8
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stack-based buffer overflow in Bentley Systems MicroStation Connect 10.17.0.209 and earlier allows attackers to execute code via a crafted DGN file. The DGN parser mishandles malformed design-file data and overflows a stack-based buffer while opening the file. Exploitation requires a user to open the file and runs code in the context of the current MicroStation process.

The record

CVE
CVE-2022-40201
Published
Jan 6, 2023
Updated
Feb 13, 2025
Vendor
Bentley Systems
Product
MicroStation
Classifications
CWE-121, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=10.17.0.209
  2. Affected versionversion=- <=10.17.0.209

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Bentley Systems · MicroStationversion=0 <=10.17.0.209; version=- <=10.17.0.209

Published CVSS scores

7.8NISTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8Bentley SystemsCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1204.002Malicious File
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo