High severity7.8NVD Advisory· Published Sep 15, 2021· Updated Jun 17, 2026
CVE-2021-21798
CVE-2021-21798
Description
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.
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Affected products
2- Nitro Pro PDF/Nitro Pro PDFdescription
Patches
Vulnerability mechanics
References
1- talosintelligence.com/vulnerability_reports/TALOS-2021-1267nvdExploitThird Party Advisory
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