CVE-2025-66503Public exploit

Memory disclosure via unchecked EMF point count

Published Mar 17, 2026 · Updated Mar 17, 2026

Out-of-bounds read in Canva Affinity before 3.1.0 allows context-dependent attackers to disclose memory via a crafted EMF file. The EMR_POLYBEZIERTO parser trusts Count when iterating the aPoints array even when 0x1C plus eight times Count exceeds recordSize. Exploitation requires user interaction with the crafted local file and exposes process memory while also allowing an application crash.

CVSS severity7.1
High
EPSS probability0.27%
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 read in Canva Affinity before 3.1.0 allows context-dependent attackers to disclose memory via a crafted EMF file. The EMR_POLYBEZIERTO parser trusts Count when iterating the aPoints array even when 0x1C plus eight times Count exceeds recordSize. Exploitation requires user interaction with the crafted local file and exposes process memory while also allowing an application crash.

The record

CVE
CVE-2025-66503
Published
Mar 17, 2026
Updated
Mar 17, 2026
Vendor
Pexels
Product
Affinity
Classifications
CWE-125, 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

6.1Cisco TalosCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L
7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/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 exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
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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