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CVE-2021-46645

25
FAUCET Score

CVE-2021-46645 is a remote code execution vulnerability affecting Bentley MicroStation CONNECT and Bentley View, specifically within the parsing of BMP images. An attacker can exploit this flaw by crafting a malicious BMP image that, when opened by a user, triggers a buffer overflow, allowing arbitrary code execution in the context of the current process. This vulnerability has a CVSS score of 7.8 (High) due to its high impact on confidentiality, integrity, and availability, though it requires user interaction (UI:R) and local access (AV:L). Currently, there is no public exploit code available (Metasploit, Nuclei, ExploitDB: None), it is not listed in the KEV catalog, and there is no significant community discussion or media coverage, suggesting it is not actively exploited in the wild.

Impacted Technologies

VendorProductVersion(s)CPE
< 10.16.02CPE matchmatch criteria
cpe:2.3:a:bentley:microstation:*:*:*:*:*:*:*:*
< 10.16.02CPE matchmatch criteria
cpe:2.3:a:bentley:microstation_connect:*:*:*:*:*:*:*:*
< 10.16.0.80CPE matchmatch criteria
cpe:2.3:a:bentley:view:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.09%
Probability of exploitation in next 30 days
EPSS Percentile
79.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0209 is in the 79th percentile among its peer group of 11,617 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bentley.com / en/common-vulnerability-exposure/BE-2021-0002
Vendor Advisory
zerodayinitiative.com / advisories/ZDI-22-232
Third Party AdvisoryVDB Entry