CVE-2021-21797
CVSS v3
7.8
HIGH
EPSS Score
73.4 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2021-10-18
Frequently asked questions
What is 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 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.
Is CVE-2021-21797 actively exploited?
Active exploitation of CVE-2021-21797 has not been confirmed. The EPSS score is 73.4%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-21797?
CVE-2021-21797 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2021-21797 affecting your environment?
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