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AUSCERT External Security Bulletin Redistribution
APSB21-110 : Security update available for Adobe InCopy
10 November 2021
AusCERT Security Bulletin Summary
Product: Adobe InCopy
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
CVE Names: CVE-2021-43016 CVE-2021-43015
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Security Update Available for Adobe InCopy | APSB21-110
Bulletin ID Date Published Priority
APSB21-110 November 9, 2021 3
Adobe has released a security update for Adobe InCopy. This update addresses
critical and important vulnerabilities. Successful exploitation could lead to
arbitrary code execution and application denial of service.
Product Affected version Platform
Adobe InCopy 16.4 and earlier version Windows and macOS
Adobe categorizes these updates with the following priority rating and
recommends users update their software installations via the Creative Cloud
desktop app updater, or by navigating to the InCopy Help menu and clicking
"Updates." For more information, please reference this help page.
Product Updated version Platform Priority rating Availability
Adobe InCopy 17.0 Windows and macOS 3 Release Notes
For managed environments, IT administrators can use the Creative Cloud Packager
to create deployment packages. Refer to this help page for more information.
Vulnerability Vulnerability CVSS
Category Impact Severity base CVSS vector CVE Number
Memory Location CVSS:3.1/AV:L/
After End of Arbitrary code Critical 7.8 AC:L/PR:N/UI:R CVE-2021-43015
Buffer execution /S:U/C:H/I:H/
( CWE-788 )
NULL Pointer CVSS:3.1/AV:L/
Dereference ( Application Important 5.5 AC:L/PR:N/UI:R CVE-2021-43016
CWE-476 ) denial-of-service /S:U/C:N/I:N/
Adobe would like to thank the following researchers for reporting this issue
and for working with Adobe to help protect our customers.
o (yjdfy) CQY of Topsec Alpha Team CVE-2021-43015
o (hy350) HY350 of Topsec Alpha Team CVE-2021-43016
For more information, visit https://helpx.adobe.com/security.html , or email
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