An exploitable return of stack variable address vulnerability exists in the JavaScript implementation of Nitro Pro PDF. A specially crafted document can cause a stack variable to go out of scope, resulting in the application dereferencing a stale pointer. This can lead to code execution under the context of the application. An attacker can convince a user to open a document to trigger the vulnerability.

Related CVEs

CVE-2021-21798

Key Information

GHSA ID

GHSA-4vm8-m2w2-wpqm

Published

May 24, 2022 7:14 PM

Last Modified

May 24, 2022 7:14 PM

CVSS Score

7.5 /10

Primary Ecosystem

Unknown

Primary Package

Unknown

GitHub Reviewed

✗ No

Dataset

Last updated: August 2, 2025 6:46 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.