CVE-2021-21461Public exploitNetwork attack vector

Application crash via malformed BMP parsing

Published Jan 12, 2021 · Updated Aug 3, 2024

Improper input validation in SAP 3D Visual Enterprise Viewer version 9 allows remote attackers to crash the application via a manipulated BMP file. The BMP parser fails to validate attacker-supplied image data before writing past an allocated structure, producing an out-of-bounds write. A user must open the malicious file; exploitation crashes the Viewer until restart and the same flaw can permit code execution in the process.

CVSS severity8.8
High
EPSS probability1.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in SAP 3D Visual Enterprise Viewer version 9 allows remote attackers to crash the application via a manipulated BMP file. The BMP parser fails to validate attacker-supplied image data before writing past an allocated structure, producing an out-of-bounds write. A user must open the malicious file; exploitation crashes the Viewer until restart and the same flaw can permit code execution in the process.

The record

CVE
CVE-2021-21461
Published
Jan 12, 2021
Updated
Aug 3, 2024
Vendor
SAP SE
Product
SAP 3D Visual Enterprise Viewer
Classifications
CWE-787, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 12, 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

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SAP SE · SAP 3D Visual Enterprise Viewerversion=< 9

Published CVSS scores

4.3SAP CNACVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
6.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.8NVDCVSS:3.1/AV:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

Public exploit references

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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