CVE-2020-3766

Local SYSTEM code execution via incorrect service permissions

Published Mar 25, 2020 · Updated Aug 4, 2024

Insecure file permissions in Adobe Genuine Software Client 6.4 and earlier allow local users to escalate privileges on Windows. The Adobe Genuine Software Service assigns incorrect permissions to an otherwise unspecified service resource, allowing low-privileged code to modify it. Execution of low-privileged code on the host is required, and successful exploitation runs attacker-controlled code as SYSTEM.

CVSS severity7.8
High
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insecure file permissions in Adobe Genuine Software Client 6.4 and earlier allow local users to escalate privileges on Windows. The Adobe Genuine Software Service assigns incorrect permissions to an otherwise unspecified service resource, allowing low-privileged code to modify it. Execution of low-privileged code on the host is required, and successful exploitation runs attacker-controlled code as SYSTEM.

The record

CVE
CVE-2020-3766
Published
Mar 25, 2020
Updated
Aug 4, 2024
Vendor
Adobe
Product
Adobe Genuine Software Client
Classifications
CWE-276, T1574.010
Attack vector
local
Privileges
authenticated

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=Version 6.4 and earlier versions

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Adobe · Adobe Genuine Software Clientversion=Version 6.4 and earlier versions

Published CVSS scores

7.2NIST NVDAV:L/AC:L/Au:N/C:C/I:C/A:C
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/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.

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1574.010Services File Permissions Weakness

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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