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Case File

CVE-2021-21797

HIGH · CVSS 7.8 EPSS 15.05% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-10-18 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-21797
Severity
HIGH
CVSS
7.8
EPSS
15.05%
Java

Original NVD Description

An exploitable double-free vulnerability exists in the JavaScript implementation of Nitro Pro PDF. A specially crafted document can cause a reference to a timeout object to be stored in two different places. When closed, the document will result in the reference being released twice. This can lead to code execution under the context of the application. An attacker can convince a user to open a document to trigger this vulnerability.