CVE-2021-41536

Code execution via freed OBJ parser object

Published Sep 28, 2021 · Updated Aug 4, 2024

Use-after-free in OBJ parsing in Siemens Solid Edge before SE2021MP8 allows attackers to execute code through a malicious file. The parser performs operations on an object without first validating that the object still exists after its lifetime ends. Exploitation requires the target to visit a malicious page or open a malicious OBJ file, and code runs in the current process.

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 OBJ parsing in Siemens Solid Edge before SE2021MP8 allows attackers to execute code through a malicious file. The parser performs operations on an object without first validating that the object still exists after its lifetime ends. Exploitation requires the target to visit a malicious page or open a malicious OBJ file, and code runs in the current process.

The record

CVE
CVE-2021-41536
Published
Sep 28, 2021
Updated
Aug 4, 2024
Vendor
Siemens
Product
Solid Edge
Classifications
CWE-416, T1204.002, 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

7.8NIST NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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
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

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Your stack

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