CVE-2026-21299

Code execution via malicious file parsing

Published Jan 13, 2026 · Updated Jan 13, 2026

Out-of-bounds write in Adobe Substance 3D Modeler 1.22.4 and earlier allows context-dependent attackers to execute code via a malicious file. Adobe has not disclosed the affected file parser, file format, or the operation that writes beyond its intended memory boundary. Exploitation requires a user to open the file, and successful code runs with the current user's privileges.

CVSS severity7.8
High
EPSS probability0.24%
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 Adobe Substance 3D Modeler 1.22.4 and earlier allows context-dependent attackers to execute code via a malicious file. Adobe has not disclosed the affected file parser, file format, or the operation that writes beyond its intended memory boundary. Exploitation requires a user to open the file, and successful code runs with the current user's privileges.

The record

CVE
CVE-2026-21299
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
Adobe
Product
Substance 3D Modeler
Classifications
CWE-787, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 2026Record 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=0 <=1.22.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Adobe · Substance 3D Modelerversion=0 <=1.22.4

Published CVSS scores

7.8Adobe Systems IncorporatedCVSS: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 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-787Out-of-bounds Write
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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