CVE-2026-34701

Description

InDesign Desktop 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 the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

CVSS v3.1 Score

7.8

HIGH

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

EPSS — Exploit Prediction

0.0018

Probability of exploitation

0.07%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-122 CWE-122

Affected Products

Vendor	Product	Versions
adobe	indesign	< 20.5.4
adobe	indesign	21.0 — 21.4
apple	macos	All
microsoft	windows	All

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2026-34701? +

InDesign Desktop 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 the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-34701? +

CVE-2026-34701 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0018, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-34701? +

CVE-2026-34701 affects products from adobe, apple, microsoft, specifically: indesign, macos, windows. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-34701? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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