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CVE-2021-21796

nvd nist
Published: Oct 18, 2021Modified: Jun 17, 2026

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7.8
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitability: 1.8 / Impact: 5.9
Source: NVD

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.

Affected (2)

Products: Gonitro: Nitro Pro
Gonitro
1 product
Nitro Pro
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Gonitro
Nitro Pro
Version 13.31.0.605
Nitro Pro
Version 13.33.2.645

Related CWEs

CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (2)

Source: talos-cna@cisco.com
ExploitMitigationThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitMitigationThird Party Advisory

Timeline

No history available yet.