CVE-2025-21123: adobe indesign Heap-based Buffer Overflow

Vulnerability summary

CVE-2025-21123 is a high (CVSS 7.8) Heap-based Buffer Overflow vulnerability in adobe indesign. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 26.5% of scored vulnerabilities.

Timeline

1. 11-02-2025
   PublishedVulnerability first disclosed.
2. 12-02-2025
   Last modifiedVulnerability information updated.

Description

InDesign Desktop versions ID20.0, ID19.5.1 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.

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.