---
id: CVE-2021-47938
title: >-
  ImpressCMS 1.4.2 contains a remote code execution vulnerability in the
  autotasks administrative interface that allows authenticated attackers to
  execute arbitrary PHP code by injecting malicious code into the sat_code
  parameter
summary: >-
  ImpressCMS 1.4.2 contains a remote code execution vulnerability in the
  autotasks administrative interface that allows authenticated attackers to
  execute arbitrary PHP code by injecting malicious code into the sat_code
  parameter. Attacker…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-94
published: '2026-05-10'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T22:10:00.247'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-47938'
references:
  - url: 'https://www.exploit-db.com/exploits/50298'
    label: disclosure@vulncheck.com
  - url: 'https://www.impresscms.org/'
    label: disclosure@vulncheck.com
  - url: 'https://www.impresscms.org/modules/downloads/'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/impresscms-remote-code-execution-via-autotasks
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00569
epssPercentile: 0.45268
ingestedAt: '2026-10-06T22:23:15.921Z'
---

## Overview

ImpressCMS 1.4.2 contains a remote code execution vulnerability in the autotasks administrative interface that allows authenticated attackers to execute arbitrary PHP code by injecting malicious code into the sat_code parameter. Attackers can authenticate, submit a POST request to /modules/system/admin.php?fct=autotasks&op=mod with crafted sat_code containing PHP commands, which creates an executable file that accepts arbitrary commands via GET parameters.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.