CVE-2025-66342Public exploit

Code execution via unvalidated EMF brush object

Published Mar 17, 2026 · Updated Mar 17, 2026

Type confusion in Canva Affinity 3.0.1.3808 allows attackers to execute arbitrary code when a user opens a crafted EMF file. The EMF loader uses an EMR_FRAMERGN ihBrush index to retrieve an arbitrary object, then treats it as a brush without validating its type. Opening the file is required; the resulting uninitialized pointer can crash the application, while controlled memory corruption enables code execution.

CVSS severity7.8
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Type confusion in Canva Affinity 3.0.1.3808 allows attackers to execute arbitrary code when a user opens a crafted EMF file. The EMF loader uses an EMR_FRAMERGN ihBrush index to retrieve an arbitrary object, then treats it as a brush without validating its type. Opening the file is required; the resulting uninitialized pointer can crash the application, while controlled memory corruption enables code execution.

The record

CVE
CVE-2025-66342
Published
Mar 17, 2026
Updated
Mar 17, 2026
Vendor
Pexels
Product
Affinity
Classifications
CWE-843, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 17, 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 <3.1.0 (March 26)

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Pexels · Affinityversion=0 <3.1.0 (March 26)

Published CVSS scores

7.8Cisco TalosCVSS: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 exploitPublished

Weakness, pattern, technique

CWE-843Access of Resource Using Incompatible Type ('Type Confusion')
T1203Exploitation for Client Execution
T1204.002Malicious File

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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