CVE-2026-34708: InCopy | Stack-based Buffer Overflow (CWE-121)
Published Jun 9, 2026
·Updated
InCopy versions 21.3, 20.5.3 and earlier are affected by a Stack-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Affected Software
5 affected components
Adobe InCopy=21.3, <=20.5.3
All of the following
Any of the following
Adobe InCopy<20.5.4
Adobe InCopy>=21.0<21.4
Any of the following
Apple macOS
Microsoft Windows
Event History
Jun 9, 2026
CVE Published
via MITRE·05:49 PM
Data Sourced
via MITRE·05:49 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·06:16 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-34708?
CVE-2026-34708 has a severity rating of 7.8, classified as high.
2
How do I fix CVE-2026-34708?
To mitigate CVE-2026-34708, upgrade Adobe InCopy to version 21.4 or later.
3
What causes CVE-2026-34708?
CVE-2026-34708 is caused by a stack-based buffer overflow vulnerability.
4
What does CVE-2026-34708 affect?
CVE-2026-34708 affects Adobe InCopy versions 21.3, 20.5.3 and earlier.
5
Is user interaction required for CVE-2026-34708 exploitation?
Yes, exploitation of CVE-2026-34708 requires user interaction by opening a malicious file.