CVE-2021-21797
high-risk
Published 2021-10-18
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.
Do I need to act?
!
73.4% chance of exploitation in next 30 days
EPSS score — higher than 27% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10
High
LOCAL
/ LOW complexity
Affected Vendors
50
/ 100
high-risk
Severity
24/34 · High
Exploitability
19/34 · Moderate
Exposure
7/34 · Low