CVE-2026-63091 ProFTPD mod_sftp Signed Integer Overflow via SCP Size-Record Parser

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 low-privilege attackers to bypass ASLR by sending a crafted file size value of UINT64MAX, which results in a negative offt value. Attackers...

EUVD-2026-45961

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 low-privilege attackers to bypass ASLR by sending a crafted file size value of UINT64MAX, which results in a negative offt value. Attackers...

CVE-2026-63091 ProFTPD mod_sftp Signed Integer Overflow via SCP Size-Record Parser

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 low-privilege attackers to bypass ASLR by sending a crafted file size value of UINT64MAX, which results in a negative offt value. Attackers...

CVE-2026-63091 ProFTPD mod_sftp Signed Integer Overflow via SCP Size-Record Parser

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 low-privilege attackers to bypass ASLR by sending a crafted file size value of UINT64MAX, which results in a negative offt value. Attackers...

CVE-2026-63091

ProFTPD mod_sftp in versions before 1.3.9c and 1.3.10rc3 contains a signed integer overflow in the SCP size-record parser. An authenticated, low-privilege attacker can send a crafted file size (UINT64_MAX) to produce a negative off_t, convert to uint32_t, and trigger ~4 GB read length, causing th...

CVE-2026-63091

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 low-privilege attackers to bypass ASLR by sending a crafted file size value of UINT64MAX, which results in a negative offt value. Attackers...

CVE-2026-63091

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 low-privilege attackers to bypass ASLR by sending a crafted file size value of UINT64MAX, which results in a negative offt value. Attackers...

CVE-2026-63090

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 to achieve arbitrary code execution by sending crafted SFTP packet fragments exceeding the 16 KB reassembly buffer in the fxp.c component...

EUVD-2026-45960

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 to achieve arbitrary code execution by sending crafted SFTP packet fragments exceeding the 16 KB reassembly buffer in the fxp.c component...

CVE-2026-63090 ProFTPD mod_sftp Heap Buffer Overflow via SFTP Packet Reassembly

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 to achieve arbitrary code execution by sending crafted SFTP packet fragments exceeding the 16 KB reassembly buffer in the fxp.c component...

CVE-2026-63090 ProFTPD mod_sftp Heap Buffer Overflow via SFTP Packet Reassembly

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 to achieve arbitrary code execution by sending crafted SFTP packet fragments exceeding the 16 KB reassembly buffer in the fxp.c component...

CVE-2026-63090 ProFTPD mod_sftp Heap Buffer Overflow via SFTP Packet Reassembly

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 to achieve arbitrary code execution by sending crafted SFTP packet fragments exceeding the 16 KB reassembly buffer in the fxp.c component...

CVE-2026-63090

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 to achieve arbitrary code execution by sending crafted SFTP packet fragments exceeding the 16 KB reassembly buffer in the fxp.c component...

CVE-2026-63090

ProFTPD mod_sftp in fxp.c suffers a heap-based buffer overflow when oversized SFTP packet fragments exceed the 16 KB reassembly buffer. In ProFTPD 1.3.9c and 1.3.10rc3, authenticated low-priv attackers can cause arbitrary code execution by manipulating reallocation and memory, including overwriti...

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...

CVE-2026-63091: Integer Overflow or Wraparound

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 low-privilege attackers to bypass ASLR by sending a crafted file size value of UINT64MAX, which results in a negative offt value. Attackers...

CVE-2026-63090: Heap-based Buffer Overflow

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 to achieve arbitrary code execution by sending crafted SFTP packet fragments exceeding the 16 KB reassembly buffer in the fxp.c component...

PT-2026-61612

Name of the Vulnerable Software and Affected Versions ProFTPD versions prior to 1.3.9c ProFTPD versions prior to 1.3.10rc3 Description A signed integer overflow exists in the mod sftp module's SCP size-record parser. Authenticated low-privilege attackers can bypass ASLR Address Space Layout...

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-2026-63091

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...