Vulnerability · Published Feb 10, 2026 · Assigned by adobe

CVE-2026-21358InDesign Desktop | Heap-based Buffer Overflow (CWE-122)

Medium 5.5

In plain English

A medium-severity heap buffer overflow in InDesign Desktop from Adobe. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).

Severity (CVSS 3.1)5.5Medium

Exploit odds (30 days)0.2%top 91.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

InDesign Desktop versions 21.1, 20.5.1 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in application denial-of-service. An attacker could exploit this vulnerability to crash the application, causing disruption to services. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Affected products (as reported)

Vendor	Product	Versions
Adobe	InDesign Desktop	0 – through 21.10 – through 20.5.1

Weakness: CWE-122 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

https://helpx.adobe.com/security/products/indesign/apsb26-17.html vendor-advisory