CVE-2018-7750

CRITICAL

Paramiko <2.4.1 - RCE

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 3 public exploits for CVE-2018-7750. PoCs published by Adam Brown, jm33-m0, tlavi00.

AI-analyzed exploit summary This PoC exploits an authentication bypass vulnerability in Paramiko by skipping the authentication step and directly opening an SFTP channel to list the root directory. It demonstrates the flaw where Paramiko fails to enforce authentication before allowing channel operations.

Description

transport.py in the SSH server implementation of Paramiko before 1.17.6, 1.18.x before 1.18.5, 2.0.x before 2.0.8, 2.1.x before 2.1.5, 2.2.x before 2.2.3, 2.3.x before 2.3.2, and 2.4.x before 2.4.1 does not properly check whether authentication is completed before processing other requests, as demonstrated by channel-open. A customized SSH client can simply skip the authentication step.

Exploits (3)

exploitdb WORKING POC
by Adam Brown · pythonremotelinux
https://www.exploit-db.com/exploits/45712

This PoC exploits an authentication bypass vulnerability in Paramiko by skipping the authentication step and directly opening an SFTP channel to list the root directory. It demonstrates the flaw where Paramiko fails to enforce authentication before allowing channel operations.

Classification
Working Poc 100%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: Paramiko < 1.17.6, 1.18.x < 1.18.5, 2.0.x < 2.0.8, 2.1.x < 2.1.5, 2.2.x < 2.2.3, 2.3.x < 2.3.2, and 2.4.x < 2.4.1
No auth needed
Prerequisites: Network access to the target SFTP server · Paramiko library installed on the attacker's machine
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 21 stars
by jm33-m0 · poc
https://github.com/jm33-m0/CVE-2018-7750

This repository contains a working PoC for CVE-2018-7750, a remote code execution vulnerability in Paramiko SSH server versions prior to 2.4.1. The exploit leverages a flaw in the command execution handling of the SSH server, allowing arbitrary command execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Paramiko < 2.4.1
No auth needed
Prerequisites: Network access to a vulnerable Paramiko SSH server · Python environment with Paramiko library
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC
by tlavi00 · poc
https://github.com/tlavi00/CVE-2018-7750

This PoC exploits an authentication bypass vulnerability in Paramiko (CVE-2018-7750) by skipping the authentication step and directly opening an SFTP channel to list the root directory. It demonstrates the flaw where Paramiko fails to enforce authentication before allowing channel operations.

Classification
Working Poc 100%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: Paramiko < 1.17.6, 1.18.x < 1.18.5, 2.0.x < 2.0.8, 2.1.x < 2.1.5, 2.2.x < 2.2.3, 2.3.x < 2.3.2, and 2.4.x < 2.4.1
No auth needed
Prerequisites: Network access to a vulnerable Paramiko server · SFTP service running on the target
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (18)

Core 18
Core References
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:1124
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/45712/
Issue Tracking, Third Party Advisory x_refsource_confirm
https://github.com/paramiko/paramiko/issues/1175
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:1125
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:1972
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:1274
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/10/msg00018.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3603-2/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:0646
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:1213
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3603-1/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:1525
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:1328
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:0591
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/103713
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/12/msg00025.html

Scores

CVSS v3 9.8
EPSS 0.1769
EPSS Percentile 95.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-287
Status published
Products (25)
debian/debian_linux 8.0
debian/debian_linux 9.0
paramiko/paramiko 2.4.0
paramiko/paramiko < 1.17.6
pypi/paramiko 0 - 1.17.6PyPI
pypi/paramiko 1.18.0 - 1.18.5PyPI
pypi/paramiko 2.0.0 - 2.0.8PyPI
pypi/paramiko 2.1.0 - 2.1.5PyPI
pypi/paramiko 2.2.0 - 2.2.3PyPI
pypi/paramiko 2.3.0 - 2.3.2PyPI
... and 15 more
Published Mar 13, 2018
Tracked Since Feb 18, 2026