CVE-2025-21139

Code execution via heap-based buffer overflow

Published Jan 14, 2025 · Updated Feb 12, 2025

Heap-based buffer overflow in Adobe Substance 3D Designer 14.0 and earlier allows attackers to execute code via a malicious file. Adobe identifies the flaw as a heap-based buffer overflow but has not disclosed the affected parser, file format, or incorrect memory operation. Execution occurs with the current user's privileges and requires the victim to open the crafted file, so no network service is directly exposed.

CVSS severity7.8
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Adobe Substance 3D Designer 14.0 and earlier allows attackers to execute code via a malicious file. Adobe identifies the flaw as a heap-based buffer overflow but has not disclosed the affected parser, file format, or incorrect memory operation. Execution occurs with the current user's privileges and requires the victim to open the crafted file, so no network service is directly exposed.

The record

CVE
CVE-2025-21139
Published
Jan 14, 2025
Updated
Feb 12, 2025
Vendor
Adobe
Product
Substance 3D Designer
Classifications
CWE-787, CWE-122, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2025Record 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 <=14.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Adobe · Substance 3D Designerversion=0 <=14.0

Published CVSS scores

7.8AdobeCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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
CWE-122Heap-based Buffer Overflow
T1204.002User Execution: Malicious 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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