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CVE-2026-42167

Published: Apr 28, 2026Updated: May 1, 2026 Sources: CVE List NVD BDUCWE-89
NVD MITRE
8.1CVSSHIGH
EPSS Score
4.8%
Top 9.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

Description

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).

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-89

Affected Products

ProFTPDProFTPD
On-prem
Networking Infrastructure / network-management
ProFTPDThe ProFTPD Project
proftpdoss-projectNetworking Infrastructureaka proftpd, proftpd-dfsg
the proftpd projectaka proftpd

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
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References

http://www.proftpd.org/docs/RELEASE_NOTES-1.3.10rc1
proftpd.org
https://github.com/proftpd/proftpd/issues/2052
github.com
https://zeropath.com/blog/proftpd-cve-2026-42167-auth-bypass-privesc-rce
zeropath.com
and 6 more references View all →

Timeline

Published
Apr 28, 2026
Last Updated
May 1, 2026

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