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CVE-2026-42167

54
FAUCET Score

mod_sql in ProFTPD before 1.3.9a allows remote attackers to execute arbitrary code via a username, in scenarios where there is logging of USER requests with an expansion such as %U, and the SQL backend allows commands (e.g., COPY TO PROGRAM).

First published: Apr 28, 2026Last modified: May 1, 2026

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.3.9bCPE matchmatch criteria
cpe:2.3:a:proftpd:proftpd:*:*:*:*:*:*:*:*
>= 1.3.7b, < 1.3.9aCPE match
cpe:2.3:a:proftpd:proftpd:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.44%
Probability of exploitation in next 30 days
EPSS Percentile
90.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2026-42167 · Apr 29, 2026
This CVE's current EPSS score of 0.0444 is in the 55th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

openwall.com / lists/oss-security/2026/05/01/13
Mailing List
openwall.com / lists/oss-security/2026/05/01/4
Mailing List
github.com / proftpd/proftpd/issues/2052
ExploitIssue TrackingPatch
github.com / ZeroPathAI/proftpd-CVE-2026-42167-poc
ExploitThird Party Advisory
openwall.com / lists/oss-security/2026/05/01/4
Mailing List
zeropath.com / blog/proftpd-cve-2026-42167-auth-bypass-privesc-rce
ExploitPress/Media CoverageThird Party Advisory
proftpd.org / docs/RELEASE_NOTES-1.3.10rc1
Release Notes