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CVE-2021-40417

31
FAUCET Score

CVE-2021-40417 is a critical heap-based buffer overflow vulnerability affecting Blackmagic Design DaVinci Resolve, specifically within its DPDecoder service when processing submitted video files. The vulnerability stems from an integer overflow during heap buffer size calculation, leading to an undersized buffer and subsequent overflow when written to. This flaw carries a CVSS score of 9.8 (Critical) due to its network-exploitable nature, low attack complexity, and potential for complete compromise (code execution). While not currently listed in CISA KEV, there is limited public exploit intelligence, with no Metasploit or ExploitDB modules, but it has garnered some community discussion and media coverage, indicating awareness.

Impacted Technologies

VendorProductVersion(s)CPE
17.3.1.0005CPE matchmatch criteria
cpe:2.3:a:blackmagicdesign:davinci_resolve:17.3.1.0005:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
15.68%
Probability of exploitation in next 30 days
EPSS Percentile
96.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1568 is in the 93rd percentile among its peer group of 36,862 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

talosintelligence.com / vulnerability_reports/TALOS-2021-1426
ExploitThird Party Advisory