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CVE-2024-3566

33
FAUCET Score

CVE-2024-3566, dubbed "BatBadBut," is a critical command injection vulnerability affecting Windows applications that indirectly use the CreateProcess function. This flaw impacts multiple programming languages and projects, including Go, Haskell, Node.js, PHP, Rust, and yt-dlp. With a CVSS score of 9.8 (Critical), it presents a severe risk, allowing unauthenticated attackers to achieve full compromise (confidentiality, integrity, availability) with low attack complexity over the network. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating high awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.6.19.0CPE matchmatch criteria
cpe:2.3:a:haskell:process_library:*:*:*:*:*:*:*:*
< 18.20.2CPE matchmatch criteria
cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*
>= 19.0.0, < 20.12.2CPE matchmatch criteria
cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*
>= 21.0.0, < 21.7.3CPE matchmatch criteria
cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*
< 8.1.28CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*

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
6.88%
Probability of exploitation in next 30 days
EPSS Percentile
93.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0688 is in the 88th 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

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)

microsoft2024-Apr/CVE-2024-3566

Command injection vulnerability in programing languages on Microsoft Windows operating system.

Apr 9, 2024

References

github.com / nu11secur1ty/Windows11Exploits/tree/main/2024/CVE-2024-3566
Third Party Advisory
flatt.tech / research/posts/batbadbut-you-cant-securely-execute-commands-on-windows
ExploitThird Party Advisory
kb.cert.org / vuls/id/123335
Third Party Advisory
learn.microsoft.com / en-us/archive/blogs/twistylittlepassagesallalike/everyone-quotes-command-line-arguments-the-wrong-way
Technical Description
cve.org / CVERecord
Not Applicable
cve.org / CVERecord
Not Applicable
cve.org / CVERecord
Not Applicable
kb.cert.org / vuls/id/123335
Not Applicable