CVE-2021-37179

Code execution via malformed OBJ parsing

Published Aug 10, 2021 · Updated Aug 4, 2024

Use-after-free in Siemens Solid Edge SE2021 before SE2021MP7 allows attackers to execute code by opening crafted OBJ files. The PSKERNEL.dll library fails to validate OBJ data, causing a use-after-free during parsing; exploitation requires a local user to open the malicious file and runs in the current process context.

CVSS severity7.8
High
EPSS probability1.38%
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 SE2021MP7 allows attackers to execute code by opening crafted OBJ files. The PSKERNEL.dll library fails to validate OBJ data, causing a use-after-free during parsing; exploitation requires a local user to open the malicious file and runs in the current process context.

The record

CVE
CVE-2021-37179
Published
Aug 10, 2021
Updated
Aug 4, 2024
Vendor
Siemens
Product
Solid Edge
Classifications
CWE-416, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 10, 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 < SE2021MP7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · Solid Edgeversion=All Versions < SE2021MP7

Published CVSS scores

7.8Siemens ProductCERTCVSS: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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