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Vulnerability record · CVE-2026-34631 · published 14 April 2026

CVE-2026-34631: Adobe incopy out-of-bounds write vulnerability

Adobe · Incopy

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.

7.8 CVSS 3.1 High EPSS 0.26% · top 84.4% CWE-787 · Out-of-bounds write
7.8CVSS 3.1 base score
0.26%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
28 Aug 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://helpx.adobe.com/security/products/incopy/apsb26-33.html Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2021-21090Adobe incopy path traversal vulnerabilityAdobe InCopy version 16.0 (and earlier) is affected by an path traversal vulnerability when parsing a crafted file. An unauthenticated attacker could…EPSS 5.4%7.8CVE-2026-34706Adobe incopy out-of-bounds write vulnerabilityInCopy versions 21.3, 20.5.3 and earlier are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the co…EPSS 0.26%7.8CVE-2026-34707Adobe incopy heap-based buffer overflow vulnerabilityInCopy versions 21.3, 20.5.3 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in …EPSS 0.34%7.8CVE-2026-34708Adobe incopy stack-based buffer overflow vulnerabilityInCopy 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…EPSS 0.34%7.8CVE-2026-27287Adobe incopy out-of-bounds read vulnerabilityInCopy versions 20.5.2, 21.2 and earlier are affected by an out-of-bounds read vulnerability when parsing a crafted file, which could result in a rea…EPSS 0.29%7.8CVE-2026-21281Adobe incopy heap-based buffer overflow vulnerabilityInCopy versions 21.0, 19.5.5 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in …EPSS 0.22%7.8CVE-2025-61816Adobe incopy heap-based buffer overflow vulnerabilityInCopy versions 20.5, 19.5.5 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in …EPSS 0.26%7.8CVE-2025-61817Adobe incopy use after free vulnerabilityInCopy versions 20.5, 19.5.5 and earlier are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context …EPSS 0.23%

Source: NIST National Vulnerability Database (record CVE-2026-34631), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.