Vulnerability Details : CVE-2021-21798

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.
Published 2021-09-15 14:15:09
Updated 2022-10-25 16:01:06
Source Talos
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2021-21798

EPSS FAQ
0.10%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 41 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-21798

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.8
 MEDIUM AV:N/AC:M/Au:N/C:P/I:P/A:P
8.6
6.4
 NIST
8.8
 HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
2.8
5.9
 Talos
7.8
 HIGH CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
1.8
5.9
 NIST

CWE ids for CVE-2021-21798

  • A function returns the address of a stack variable, which will cause unintended program behavior, typically in the form of a crash.
    Assigned by: talos-cna@cisco.com (Secondary)

References for CVE-2021-21798

Products affected by CVE-2021-21798

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