CVE-2020-13386

Local code execution via writable scheduled-task binary

Published May 27, 2020 · Updated Aug 4, 2024

Incorrect permission assignment in SmartDraw 2020 27.0.0.0 allows local users to execute code via scheduled-task binary hijacking. The installer grants Authenticated Users inherited write access to the installation folder, while SDMsgUpdate tasks run SDNotify.exe from a missing Messages directory in the installing user's context. A local user can plant that executable before the installer user logs on, causing code execution with that user's privileges and potentially enabling local administrator creation.

CVSS severity7.3
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect permission assignment in SmartDraw 2020 27.0.0.0 allows local users to execute code via scheduled-task binary hijacking. The installer grants Authenticated Users inherited write access to the installation folder, while SDMsgUpdate tasks run SDNotify.exe from a missing Messages directory in the installing user's context. A local user can plant that executable before the installer user logs on, causing code execution with that user's privileges and potentially enabling local administrator creation.

The record

CVE
CVE-2020-13386
Published
May 27, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-732, T1053.005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.2MITRECVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
7.3NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
4.4NVDAV:L/AC:M/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource
T1053.005Scheduled Task/Job: Scheduled Task

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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