High severity · published Oct 18, 2021
CVE-2021-21796
An exploitable use-after-free vulnerability exists in the JavaScript implementation of Nitro Pro PDF
7.8
CVSS
15.8%
EPSS
No
On KEV
Description
An exploitable use-after-free vulnerability exists in the JavaScript implementation of Nitro Pro PDF. A specially crafted document can cause an object containing the path to a document to be destroyed and then later reused, resulting in a use-after-free vulnerability, which 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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)15.8% · higher than 97% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NP
Nitro Pro · Gonitro
13.31.0.605; 13.33.2.645 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21796
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21796
Exploit
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1265
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