CVE-2020-3786Network attack vector

Code execution via DICOM plugin out-of-bounds write

Published Mar 25, 2020 · Updated Aug 4, 2024

Memory corruption in Adobe Photoshop CC 2019 20.0.8 and earlier and Photoshop 2020 21.1 and earlier allows remote attackers to execute code. The Dicom plugin decodes a malformed DCM file without a proper bounds check, causing an out-of-bounds write that can corrupt control flow. The crafted file must be processed by Photoshop; successful exploitation runs code in the application's current-user context.

CVSS severity9.8
Critical
EPSS probability3.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in Adobe Photoshop CC 2019 20.0.8 and earlier and Photoshop 2020 21.1 and earlier allows remote attackers to execute code. The Dicom plugin decodes a malformed DCM file without a proper bounds check, causing an out-of-bounds write that can corrupt control flow. The crafted file must be processed by Photoshop; successful exploitation runs code in the application's current-user context.

The record

CVE
CVE-2020-3786
Published
Mar 25, 2020
Updated
Aug 4, 2024
Vendor
Adobe
Product
Adobe Photoshop
Classifications
CWE-787, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 25, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=Photoshop CC 2019, and Photoshop 2020 versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Adobe · Adobe Photoshopversion=Photoshop CC 2019, and Photoshop 2020 versions

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
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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