CVE-2026-34706: Out-of-bounds Write (CWE-787) in Adobe InCopy
Adobe InCopy contains an out-of-bounds write vulnerability (CWE-787) in versions up to 20.5.3 and 21.3. This flaw could allow an attacker to execute arbitrary code with the privileges of the current user if a victim opens a specially crafted malicious file. Exploitation requires user interaction. The vulnerability has a high severity rating with a CVSS score of 7.8.
AI Analysis
Technical Summary
CVE-2026-34706 is an out-of-bounds write vulnerability in Adobe InCopy affecting versions up to and including 20.5.3 and 21.3. The vulnerability allows arbitrary code execution in the context of the current user upon opening a malicious file. The attack vector requires local access and user interaction, with low attack complexity and no privileges required. The vulnerability impacts confidentiality, integrity, and availability with high severity.
Potential Impact
Successful exploitation can lead to arbitrary code execution with the privileges of the current user, potentially compromising system confidentiality, integrity, and availability. The attack requires the victim to open a malicious file, so social engineering or tricking the user is necessary. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented. Users should exercise caution when opening files from untrusted sources until a patch is available.
CVE-2026-34706: Out-of-bounds Write (CWE-787) in Adobe InCopy
Description
Adobe InCopy contains an out-of-bounds write vulnerability (CWE-787) in versions up to 20.5.3 and 21.3. This flaw could allow an attacker to execute arbitrary code with the privileges of the current user if a victim opens a specially crafted malicious file. Exploitation requires user interaction. The vulnerability has a high severity rating with a CVSS score of 7.8.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-34706 is an out-of-bounds write vulnerability in Adobe InCopy affecting versions up to and including 20.5.3 and 21.3. The vulnerability allows arbitrary code execution in the context of the current user upon opening a malicious file. The attack vector requires local access and user interaction, with low attack complexity and no privileges required. The vulnerability impacts confidentiality, integrity, and availability with high severity.
Potential Impact
Successful exploitation can lead to arbitrary code execution with the privileges of the current user, potentially compromising system confidentiality, integrity, and availability. The attack requires the victim to open a malicious file, so social engineering or tricking the user is necessary. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented. Users should exercise caution when opening files from untrusted sources until a patch is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- adobe
- Date Reserved
- 2026-03-30T17:30:36.498Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a28f1e98dd33fbd85e94453
Added to database: 06/10/2026, 05:11:05 UTC
Last enriched: 06/17/2026, 09:24:32 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 77
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