PatchSiren cyber security CVE debrief

CVE-2026-34695 Adobe CVE debrief

CVE-2026-34695 is a Stack-based Buffer Overflow vulnerability affecting Adobe InDesign versions 21.3, 20.5.3, and earlier. This vulnerability could result in arbitrary code execution in the context of the current user. Exploitation requires user interaction, as a victim must open a malicious file.

Vendor: Adobe
Product: InDesign Desktop
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 InDesign versions 21.3, 20.5.3, and earlier should apply patches or mitigations to prevent potential arbitrary code execution.

Technical summary

The vulnerability, tracked as CVE-2026-34695, is a Stack-based Buffer Overflow issue in Adobe InDesign. It has a CVSS score of 7.8 and is classified as HIGH severity. The vulnerability's CVSS vector is CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Defensive priority

High

Recommended defensive actions

Apply patches or updates provided by Adobe to vulnerable InDesign versions.
Exercise caution when opening files from untrusted sources.

Evidence notes

CVE-2026-34695 was published on [cvePublishedAt] and modified on [cveModifiedAt]. The vulnerability affects InDesign versions 21.3, 20.5.3, and earlier.

Sources and references

Verified primary and authoritative sources

CVE-2026-34695 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2026-34695

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2026-34695 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-34695

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

Supplemental references

Mitigation or vendor reference
Unverified legacy reference

URL: https://helpx.adobe.com/security/products/indesign/apsb26-58.html

[email protected] - Vendor Advisory

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.