CVE-2021-34872

Remote code execution via SKP use-after-free

Published Jan 13, 2022 · Updated Aug 4, 2024

Use-after-free in Bentley Systems Bentley View 10.15.0.75 allows remote attackers to execute arbitrary code via a maliciously crafted SKP file. The SKP parser performs operations on an object without validating that the object still exists, triggering use-after-free memory corruption. Exploitation requires a user to open the malicious file or visit a page that causes it to open, and code runs with the current process privileges.

CVSS severity7.8
High
EPSS probability2.02%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Bentley Systems Bentley View 10.15.0.75 allows remote attackers to execute arbitrary code via a maliciously crafted SKP file. The SKP parser performs operations on an object without validating that the object still exists, triggering use-after-free memory corruption. Exploitation requires a user to open the malicious file or visit a page that causes it to open, and code runs with the current process privileges.

The record

CVE
CVE-2021-34872
Published
Jan 13, 2022
Updated
Aug 4, 2024
Vendor
Bentley Systems
Product
Bentley View
Classifications
CWE-416, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=10.15.0.75

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Bentley Systems · Bentley Viewversion=10.15.0.75

Published CVSS scores

6.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
7.8NVDCVSS: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.

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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-416Use After Free
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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