---
id: CVE-2021-42635
title: >-
  PrinterLogic Web Stack versions 19.1.1.13 SP9 and below use a hardcoded
  APP_KEY value, leading to pre-auth remote code execution.
summary: >-
  PrinterLogic Web Stack versions 19.1.1.13 SP9 and below use a hardcoded
  APP_KEY value, leading to pre-auth remote code execution.
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-798
vendor: printerlogic
product: web_stack
affected:
  - web_stack < 19.1.1.13
  - web_stack = 19.1.1.13
patched:
  - web_stack 19.1.1.13
published: '2022-01-31'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-42635'
references:
  - url: >-
      https://portswigger.net/daily-swig/printerlogic-vendor-addresses-triple-rce-threat-against-all-connected-endpoints
    label: cve@mitre.org
  - url: >-
      https://securityaffairs.co/wordpress/127194/security/printerlogic-printer-management-suite-flaws.html
    label: cve@mitre.org
  - url: >-
      https://thecyberthrone.in/2022/01/26/printerlogic-%F0%9F%96%A8-fixes-critical-vulnerabilities-in-its-suite/?utm_source=rss&utm_medium=rss&utm_campaign=printerlogic-%25f0%259f%2596%25a8-fixes-critical-vulnerabilities-in-its-suite
    label: cve@mitre.org
  - url: 'https://www.printerlogic.com/security-bulletin/'
    label: cve@mitre.org
  - url: >-
      https://www.securityweek.com/printerlogic-patches-code-execution-flaws-printer-management-suite
    label: cve@mitre.org
  - url: >-
      https://www.yahooinc.com/paranoids/paranoids-vulnerability-research-printerlogic-issues-security-alert/
    label: cve@mitre.org
  - url: 'http://printerlogic.com'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://portswigger.net/daily-swig/printerlogic-vendor-addresses-triple-rce-threat-against-all-connected-endpoints
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://securityaffairs.co/wordpress/127194/security/printerlogic-printer-management-suite-flaws.html
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://thecyberthrone.in/2022/01/26/printerlogic-%F0%9F%96%A8-fixes-critical-vulnerabilities-in-its-suite/?utm_source=rss&utm_medium=rss&utm_campaign=printerlogic-%25f0%259f%2596%25a8-fixes-critical-vulnerabilities-in-its-suite
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.printerlogic.com/security-bulletin/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.securityweek.com/printerlogic-patches-code-execution-flaws-printer-management-suite
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.yahooinc.com/paranoids/paranoids-vulnerability-research-printerlogic-issues-security-alert/
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.05569
epssPercentile: 0.92569
ingestedAt: '2026-07-06T17:03:23.874Z'
---

## Overview

PrinterLogic Web Stack versions 19.1.1.13 SP9 and below use a hardcoded APP_KEY value, leading to pre-auth remote code execution.

## Affected

- `web_stack < 19.1.1.13`
- `web_stack = 19.1.1.13`

## Remediation

Upgrade past the affected range:

- `web_stack 19.1.1.13`