CVE-2026-53994

A flaw was found in ProFTPD's modsftp module. An authenticated SFTP user can exploit a heap-based buffer overflow by sending a specially crafted SFTP packet with a zero-length value. This can lead to an unsigned integer underflow, causing the system to allocate a small memory block while expectin...

Linux Distros Unpatched Vulnerability : CVE-2026-63091

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ProFTPD before 1.3.9c and 1.3.10rc3 contains a signed integer overflow vulnerability in the modsftp module's SCP size-record parser that allows authenticated...

Linux Distros Unpatched Vulnerability : CVE-2026-53994

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ProFTPD modsftp contains a heap-based buffer overflow reachable by an authenticated SFTP user. The fxppacketread function accepts the attacker-supplied 32-bit...

Linux Distros Unpatched Vulnerability : CVE-2026-63090

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ProFTPD before 1.3.9c and 1.3.10rc3 contains a heap-based buffer overflow vulnerability in the modsftp module that allows authenticated low-privilege attackers ...

CVE-2026-53994

ProFTPD modsftp contains a heap-based buffer overflow reachable by an authenticated SFTP user. The fxppacketread function accepts the attacker-supplied 32-bit big-endian SFTP packet length without a minimum sanity check. A value of 0 causes an unsigned subtraction elsewhere in the read path to...

DEBIAN-CVE-2026-53994

ProFTPD modsftp contains a heap-based buffer overflow reachable by an authenticated SFTP user. The fxppacketread function accepts the attacker-supplied 32-bit big-endian SFTP packet length without a minimum sanity check. A value of 0 causes an unsigned subtraction elsewhere in the read path to...

CVE-2026-53994

ProFTPD modsftp contains a heap-based buffer overflow reachable by an authenticated SFTP user. The fxppacketread function accepts the attacker-supplied 32-bit big-endian SFTP packet length without a minimum sanity check. A value of 0 causes an unsigned subtraction elsewhere in the read path to...

UBUNTU-CVE-2026-53994

ProFTPD modsftp contains a heap-based buffer overflow reachable by an authenticated SFTP user. The fxppacketread function accepts the attacker-supplied 32-bit big-endian SFTP packet length without a minimum sanity check. A value of 0 causes an unsigned subtraction elsewhere in the read path to...

CVE-2026-53994 ProFTPD mod_sftp Heap Buffer Overflow via Unsigned Integer Underflow and Size Truncation

ProFTPD modsftp contains a heap-based buffer overflow reachable by an authenticated SFTP user. The fxppacketread function accepts the attacker-supplied 32-bit big-endian SFTP packet length without a minimum sanity check. A value of 0 causes an unsigned subtraction elsewhere in the read path to...

CVE-2026-53994

ProFTPD modsftp contains a heap-based buffer overflow reachable by an authenticated SFTP user. The fxppacketread function accepts the attacker-supplied 32-bit big-endian SFTP packet length without a minimum sanity check. A value of 0 causes an unsigned subtraction elsewhere in the read path to...

CVE-2026-53994 ProFTPD mod_sftp Heap Buffer Overflow via Unsigned Integer Underflow and Size Truncation

ProFTPD modsftp contains a heap-based buffer overflow reachable by an authenticated SFTP user. The fxppacketread function accepts the attacker-supplied 32-bit big-endian SFTP packet length without a minimum sanity check. A value of 0 causes an unsigned subtraction elsewhere in the read path to...

CVE-2026-53994 ProFTPD mod_sftp Heap Buffer Overflow via Unsigned Integer Underflow and Size Truncation

ProFTPD modsftp contains a heap-based buffer overflow reachable by an authenticated SFTP user. The fxppacketread function accepts the attacker-supplied 32-bit big-endian SFTP packet length without a minimum sanity check. A value of 0 causes an unsigned subtraction elsewhere in the read path to...

EUVD-2026-45396

ProFTPD modsftp contains a heap-based buffer overflow reachable by an authenticated SFTP user. The fxppacketread function accepts the attacker-supplied 32-bit big-endian SFTP packet length without a minimum sanity check. A value of 0 causes an unsigned subtraction elsewhere in the read path to...

CVE-2026-53994

ProFTPD mod_sftp has a heap-based buffer overflow reachable by an authenticated SFTP user. The fxp_packet_read() function accepts an attacker-controlled 32-bit big-endian SFTP packet length without minimum sanity checks. A value of 0 underflows in the read path, yielding an oversized request (~4 ...

CVE-2026-53994

ProFTPD modsftp contains a heap-based buffer overflow reachable by an authenticated SFTP user. The fxppacketread function accepts the attacker-supplied 32-bit big-endian SFTP packet length without a minimum sanity check. A value of 0 causes an unsigned subtraction elsewhere in the read path to...

[SECURITY] Fedora 43 Update: proftpd-1.3.9c-1.fc43

ProFTPD is an enhanced FTP server with a focus toward simplicity, security, and ease of configuration. It features a very Apache-like configuration syntax, and a highly customizable server infrastructure, including support for multiple 'virtual' FTP servers, anonymous FTP, and permission-based...

[SECURITY] Fedora 44 Update: proftpd-1.3.9c-1.fc44

ProFTPD is an enhanced FTP server with a focus toward simplicity, security, and ease of configuration. It features a very Apache-like configuration syntax, and a highly customizable server infrastructure, including support for multiple 'virtual' FTP servers, anonymous FTP, and permission-based...

PT-2026-60983

Name of the Vulnerable Software and Affected Versions ProFTPD mod sftp affected versions not specified Description An authenticated SFTP user can trigger a heap-based buffer overflow. The fxp packet read function fails to perform a minimum sanity check on the attacker-supplied 32-bit big-endian...

cybersecurity-exam-report

Cybersecurity Exam Project: ProFTPD Exploitation and MySQL Dat...

Linux Distros Unpatched Vulnerability : CVE-2026-35025

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ProFTPD through 1.3.9b and 1.3.10rc2 contains an access control bypass vulnerability that allows authenticated FTP users to circumvent Directory ACL restriction...