CVE-2021-33681Network attack vector

Application crash via CGM out-of-bounds write

Published Jul 14, 2021 · Updated Aug 3, 2024

Out-of-bounds write in SAP 3D Visual Enterprise Viewer 9 allows remote attackers to crash the application via a manipulated CGM file. The CGM parser writes beyond an allocated buffer when processing crafted file data, corrupting memory and terminating the Viewer. Exploitation requires a user to open the file; the resulting service interruption lasts until the application is restarted.

CVSS severity6.5
Medium
EPSS probability0.76%
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 write in SAP 3D Visual Enterprise Viewer 9 allows remote attackers to crash the application via a manipulated CGM file. The CGM parser writes beyond an allocated buffer when processing crafted file data, corrupting memory and terminating the Viewer. Exploitation requires a user to open the file; the resulting service interruption lasts until the application is restarted.

The record

CVE
CVE-2021-33681
Published
Jul 14, 2021
Updated
Aug 3, 2024
Vendor
SAP SE
Product
SAP 3D Visual Enterprise Viewer
Classifications
CWE-787, T1204
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 14, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=< 9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SAP SE · SAP 3D Visual Enterprise Viewerversion=< 9.0

Published CVSS scores

4.3NVDAV:N/AC:M/Au:N/C:N/I:N/A:P
6.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1204User 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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