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CVE-2021-25944

30
FAUCET Score

CVE-2021-25944 is a critical prototype pollution vulnerability affecting 'deep-defaults' versions 1.0.0 through 1.0.5. This flaw, rated 9.8 CVSS, allows an unauthenticated attacker to cause a denial of service and potentially achieve remote code execution with low attack complexity. While no public exploit code or active exploitation has been observed, and community discussion is minimal, its high severity warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.0.0, <= 1.0.5CPE matchmatch criteria
cpe:2.3:a:deep-defaults_project:deep-defaults:*:*:*:*:*:node.js:*:*

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
2.96%
Probability of exploitation in next 30 days
EPSS Percentile
85.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0296 is in the 77th percentile among its peer group of 36,835 CVEs.

Social Chatter

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

No media coverage found for this CVE.

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

Remediation

Vendor Advisories (1)

npmGHSA-h6xg-rg33-9mf4critical

deep-defaults vulnerable to prototype pollution

May 24, 2022

References

whitesourcesoftware.com / vulnerability-database/CVE-2021-25944
ExploitThird Party Advisory