What is CVE-2021-21797?

CVE-2021-21797 is a high-severity vulnerability in Nitro Pro, classified under Double Free. CVSS score: 8.8/10. Published 2021-10-18.

How severe is CVE-2021-21797?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2021-21797 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Double Free in Nitro Pro

CVE-2021-21797

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…

Vulnerability class: Double Free

EPSS: 0.688 (98.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

N/a Nitro Pro — versions Nitro Pro 13.31.0.605 ,Nitro Pro 13.33.2.645

Weakness classification (CWE)

CWE-415 — Double Free

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

talosintelligence.com/vulnerability_reports/TALOS-2021-1266 (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-21797?: CVE-2021-21797 is a high-severity vulnerability in Nitro Pro, classified under Double Free. CVSS score: 8.8/10. Published 2021-10-18.
How severe is CVE-2021-21797?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2021-21797 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.