CVE-2021-21798
high-risk
Published 2021-09-15
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.
Do I need to act?
!
63.4% chance of exploitation in next 30 days
EPSS score — higher than 37% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
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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