CVE-2021-41533

Information disclosure via unchecked JT file bounds

Published Sep 28, 2021 · Updated Aug 4, 2024

Out-of-bounds reads in Siemens NX before 1984 and Solid Edge SE2021 before SE2021MP8 allow remote attackers to disclose process memory via JT files. The JT parser fails to validate user-supplied data against the allocated buffer and reads beyond its end. Exploitation requires the target to open a malicious file or visit a malicious page; the direct consequence is disclosure in the current process.

CVSS severity3.3
Low
EPSS probability0.97%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds reads in Siemens NX before 1984 and Solid Edge SE2021 before SE2021MP8 allow remote attackers to disclose process memory via JT files. The JT parser fails to validate user-supplied data against the allocated buffer and reads beyond its end. Exploitation requires the target to open a malicious file or visit a malicious page; the direct consequence is disclosure in the current process.

The record

CVE
CVE-2021-41533
Published
Sep 28, 2021
Updated
Aug 4, 2024
Vendor
Siemens
Product
NX
Classifications
CWE-125, T1566.001, T1204.002
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 < V1984

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · NXversion=All versions < V1984
Siemens · Solid Edgeversion=All versions < SE2021MP8

Published CVSS scores

3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:P/I:N/A:N

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-125Out-of-bounds Read
T1566.001Spearphishing Attachment
T1204.002Malicious File

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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