CVE-2026-34631
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk3th percentile - higher than 3% of all known CVEs
Summary
An out-of-bounds write vulnerability in Adobe InCopy versions 20.5.2, 21.2 and earlier. It could allow arbitrary code execution in the context of the current user. Exploitation requires user interaction – opening a malicious file.
Risk Assessment
An attacker could take control of the user's workstation, leading to data theft, malware installation, or lateral movement within the network.
Recommendation
Update Adobe InCopy to the latest available version. Instruct users not to open files from untrusted sources.
Other vulnerabilities in Adobe InCopy
See all- CVE-2026-34708High
Adobe InCopy versions 21.3, 20.5.3 and earlier are affected by a stack-based buffer overflow vulnerability that could allow arbitrary code execution in the context of the current user.
- CVE-2026-21281High
InCopy versions 21.0, 19.5.5 and earlier are affected by a heap-based buffer overflow that could allow arbitrary code execution in the context of the current user. Exploitation requires user interaction, such as opening a malicious file.
Original NVD description (English source)
InCopy versions 20.5.2, 21.2 and earlier are affected by an out-of-bounds write 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.