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CVE-2026-53545— Termix: Remote Code Execution via Tunnel Disconnect pkill Command Injection

Quick assessment

Affected
Termix-SSH Termix
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

termix是termix个人开发者的一个终端模拟器。 Termix 2.3.2之前版本存在命令注入漏洞，该漏洞源于src/backend/ssh/tunnel.ts中的DELETE /ssh/tunnel/disconnect/:tunnelName拆除路径将endpointPort、sourcePort、endpointUsername和endpointIP插入单引号pkill -f模式，经过身份验证的用户可通过编辑隧道主机字段包含单引号终止模式并附加shell命令，可能导致以连接SSH账户的权限执行

CVSS 9.8 · Critical EPSS 0.54% · P43

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
Termix-SSH Termix < 2.3.2 affected
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I. Basic Information for CVE-2026-53545

Vulnerability Information
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Vulnerability Title
Termix: Remote Code Execution via Tunnel Disconnect pkill Command Injection
Source: CVE Program / CVE List V5
Vulnerability Description
Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. Prior to 2.3.2, the DELETE /ssh/tunnel/disconnect/:tunnelName teardown path in src/backend/ssh/tunnel.ts interpolates endpointPort, sourcePort, endpointUsername, and endpointIP into single-quoted pkill -f patterns. An authenticated user who can edit a tunnel host field can include a single quote to terminate the pattern and append a shell command, which executes when the tunnel is disconnected. Successful exploitation runs arbitrary commands on the source SSH host with the privileges of the connected SSH account. This issue is fixed in version 2.3.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Termix 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
termix是termix个人开发者的一个终端模拟器。 Termix 2.3.2之前版本存在命令注入漏洞，该漏洞源于src/backend/ssh/tunnel.ts中的DELETE /ssh/tunnel/disconnect/:tunnelName拆除路径将endpointPort、sourcePort、endpointUsername和endpointIP插入单引号pkill -f模式，经过身份验证的用户可通过编辑隧道主机字段包含单引号终止模式并附加shell命令，可能导致以连接SSH账户的权限执行
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Termix-SSH Termix < 2.3.2 -

II. Public POCs for CVE-2026-53545

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7513 chars
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In-depth vulnerability mechanism
Trigger conditions & impact
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III. Intelligence Information for CVE-2026-53545

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Patches & Fixes for CVE-2026-53545 (1)

Vendor Advisories for CVE-2026-53545 (1)

Same Patch Batch · Termix-SSH · 2026-08-19 · 6 CVEs total

CVE-2026-53548 9.6 CRITICAL Termix: IDOR — Authenticated user can fetch SSH passwords for hosts owned by other users
CVE-2026-53546 9.6 CRITICAL Termix: Missing authorization in SSH host credential resolution exposes stored credentials
CVE-2026-53547 8.8 HIGH Termix: Account Takeover via Global Settings Disclosure
CVE-2026-53542 8.8 HIGH Termix: Tar option injection in file-manager archive creation allows command execution on
CVE-2026-53549 7.7 HIGH Termix: Server-Side Request Forgery via Proxy Connectivity Test

IV. Related Vulnerabilities

Same product: Termix
Same vendor: Termix-SSH
Same weakness: CWE-78

V. Comments for CVE-2026-53545

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