CVE-2021-40417

Davinci Resolve vulnerability

CVSS

9.8

EPSS

15.7%

EPSS pct

97th

Exploited

No known

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.

Affected vendor

Blackmagicdesign

Affected product

Davinci Resolve

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness type (CWE)

CWE-680
CWE-190 — Integer Overflow or Wraparound

Published

2021-12-22

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 15.7% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2021-40417

Confirm whether Blackmagicdesign Davinci Resolve is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-40417.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-40417

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-40417 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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