---
id: "CVE-2026-113403"
kind: "vulnerability"
aliases: ["CVE-2026-113403"]
title: "ArmorX Spam: authenticated command injection lets attackers upload malicious code"
severity: "high"
cvss: 7.1
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "ArmorX Spam", "fixed": ["8.15.2-3.282.133-1.90.061"], "affected": "< 8.15.2-3.282.133-1.90.061", "ecosystem": "vendor"}]
ecosystems: []
tags: ["armorx-spam", "email-gateway", "infrastructure", "self-hosted"]
not_affected_if: ["auth-required"]
published_at: "2026-10-20T07:17:09+00:00"
first_seen_at: "2026-10-23T21:57:20+00:00"
updated_at: "2026-10-25T03:37:59+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113403", "first_seen_at": "2026-10-23T21:57:20+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-25T03:37:59+00:00"}]
---

# ArmorX Spam: authenticated command injection lets attackers upload malicious code

ArmorX Spam, an email spam filter from ArmorX Global Technology, has a command injection flaw in one parameter. An logged-in attacker can send crafted input that runs commands and uploads malicious code to the server.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:ArmorX Spam affected < 8.15.2-3.282.133-1.90.061 fixed 8.15.2-3.282.133-1.90.061

## How to check

Check the installed ArmorX Spam version in the appliance admin console/about page; any version older than 8.15.2-3.282.133-1.90.061 is affected. Also limit and review who has logins to the admin interface.

## Fix

Update ArmorX Spam to 8.15.2-3.282.133-1.90.061 or later.

## Timeline

- 2026-10-23T21:57:20+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-113403
- 2026-10-25T03:37:59+00:00 analyst — TWCERT/CC TVN-202610004 (CNA, not vendor page): affected < 8.15.2-3.282.133-1.90.061, fixed in that version; parameter name not public; no PoC/exploitation found; sibling CVE-2026-113402 (LFI) same release. Not marked verified: no ArmorX vendor page read.

## Documents

- [advisory] TWCERT/CC TVN-202610004: ArmorX Spam - 2 Vulnerabilities https://www.twcert.org.tw/en/cp-139-11295-f2efd-2.html
- [describes] CVE Record CVE-2026-113403 https://www.cve.org/CVERecord?id=CVE-2026-113403

## From the sources

ArmorX Spam developed by ArmorX Global Technology has a Command Injection vulnerability. Authenticated remote attackers can inject crafted commands into a specific parameter, thereby uploading malicious code to the server.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_