CVE-2021-21493Network attack vector

Application crash via malformed GIF parsing

Published Mar 9, 2021 · Updated Aug 3, 2024

Improper input validation in SAP 3D Visual Enterprise Viewer allows remote attackers to crash the application with a crafted GIF file. The GIF parser processes malformed file data without sufficient validation, causing the viewer to terminate instead of rejecting the file. Exploitation requires a user to open an untrusted GIF, and service remains unavailable only until the application is restarted.

CVSS severity4.3
Medium
EPSS probability1.40%
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 allows remote attackers to crash the application with a crafted GIF file. The GIF parser processes malformed file data without sufficient validation, causing the viewer to terminate instead of rejecting the file. Exploitation requires a user to open an untrusted GIF, and service remains unavailable only until the application is restarted.

The record

CVE
CVE-2021-21493
Published
Mar 9, 2021
Updated
Aug 3, 2024
Vendor
SAP SE
Product
SAP 3D Visual Enterprise Viewer
Classifications
T1204.002, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 9, 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 SECVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

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 exploitUnconfirmed

Weakness, pattern, technique

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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