CVE-2021-41540

Code execution via OBJ use-after-free

Published Sep 28, 2021 · Updated Aug 4, 2024

Use-after-free in Siemens Solid Edge SE2021 before SE2021MP8 allows remote attackers to execute code via a crafted OBJ file they induce a user to open. The PSKERNEL.dll library fails to validate that an object exists before performing operations on it during OBJ parsing, creating a use-after-free condition. Exploitation requires user interaction to open the malicious file and runs code in the current process with its privileges.

CVSS severity7.8
High
EPSS probability1.16%
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 Siemens Solid Edge SE2021 before SE2021MP8 allows remote attackers to execute code via a crafted OBJ file they induce a user to open. The PSKERNEL.dll library fails to validate that an object exists before performing operations on it during OBJ parsing, creating a use-after-free condition. Exploitation requires user interaction to open the malicious file and runs code in the current process with its privileges.

The record

CVE
CVE-2021-41540
Published
Sep 28, 2021
Updated
Aug 4, 2024
Vendor
Siemens
Product
Solid Edge
Classifications
CWE-416, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 28, 2021CVE 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?

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

  1. Affected versionversion=All versions < SE2021MP8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · Solid Edgeversion=All versions < SE2021MP8

Published CVSS scores

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.

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

Technologies

Your stack

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Your stack

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