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PatchSiren cyber security CVE debrief

CVE-2026-34706 Adobe CVE debrief

CVE-2026-34706 is a HIGH-severity vulnerability in Adobe InCopy, a professional writing and editing software. The issue, reported as an out-of-bounds write vulnerability, affects InCopy versions 21.3, 20.5.3, and earlier. Successful exploitation could result in arbitrary code execution in the context of the current user, requiring user interaction to open a malicious file.

Vendor
Adobe
Product
InCopy
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-08-28
Advisory published
2026-06-09
Advisory updated
2026-08-28

Who should care

Users of Adobe InCopy versions 21.3, 20.5.3, and earlier should apply patches immediately to prevent potential code execution attacks.

Technical summary

The vulnerability, tracked as CVE-2026-34706, has a CVSS score of 7.8 and is classified as HIGH severity. It exists in the following versions: Adobe InCopy versions 21.3, 20.5.3, and earlier. The vulnerability is caused by an out-of-bounds write issue.

Defensive priority

High

Recommended defensive actions

  • Apply the official patches from Adobe as soon as possible.
  • Ensure that only authorized and digitally signed software is installed and run on systems.
  • Restrict user permissions to limit the impact of a successful exploit.
  • Regularly update and patch Adobe InCopy and other software products.

Evidence notes

The information provided is based on data from official sources, including CVE.org and the National Vulnerability Database (NVD).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-34706 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-34706

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-34706 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-34706

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.