Is CVE-2021-40417 actively exploited?

No active exploitation of CVE-2021-40417 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-40417 be exploited remotely?

Yes. CVE-2021-40417 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-40417?

CVE-2021-40417 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2021-40417

CRITICAL

CVE-2021-40417

CWE-680Published: December 22, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

When parsing a file that is submitted to the DPDecoder service as a job, the service will use the combination of decoding parameters that were submitted with the job along with fields that were parsed for the submitted video by the R3D SDK to calculate the size of a heap buffer. Due to an integer overflow with regards to this calculation, this can result in an undersized heap buffer being allocated. When this heap buffer is written to, a heap-based buffer overflow will occur. This can result in code execution under the context of the application.

NVD Source

Technical Analysis

CVE-2021-40417 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.