---
id: CVE-2020-26868
title: >-
  ARC Informatique PcVue prior to version 12.0.17 is vulnerable to a
  denial-of-service attack due to the ability of an unauthorized user to modify
  information used to validate messages sent by legitimate web clients
summary: >-
  ARC Informatique PcVue prior to version 12.0.17 is vulnerable to a
  denial-of-service attack due to the ability of an unauthorized user to modify
  information used to validate messages sent by legitimate web clients. This
  issue also affect…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-767
  - CWE-668
vendor: arcinformatique
product: pcvue
affected:
  - 'pcvue >= 8.10, < 12.0.17'
patched:
  - pcvue 12.0.17
published: '2020-10-12'
updated: '2026-07-09'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-26868'
references:
  - url: >-
      https://ics-cert.kaspersky.com/advisories/klcert-advisories/2020/10/09/klcert-20-016-denial-of-service-in-arc-informatique-pcvue/
    label: vulnerability@kaspersky.com
  - url: 'https://us-cert.cisa.gov/ics/advisories/icsa-20-308-03'
    label: vulnerability@kaspersky.com
  - url: 'https://www.pcvuesolutions.com/security'
    label: vulnerability@kaspersky.com
  - url: >-
      https://www.pcvuesolutions.com/support/index.php/en/security-bulletin/1076-security-bulletin-2020-1
    label: vulnerability@kaspersky.com
  - url: >-
      https://ics-cert.kaspersky.com/advisories/klcert-advisories/2020/10/09/klcert-20-016-denial-of-service-in-arc-informatique-pcvue/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://us-cert.cisa.gov/ics/advisories/icsa-20-308-03'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.pcvuesolutions.com/security'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.pcvuesolutions.com/support/index.php/en/security-bulletin/1076-security-bulletin-2020-1
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.02151
epssPercentile: 0.81371
ingestedAt: '2026-07-09T15:51:17.506Z'
---

## Overview

ARC Informatique PcVue prior to version 12.0.17 is vulnerable to a denial-of-service attack due to the ability of an unauthorized user to modify information used to validate messages sent by legitimate web clients. This issue also affects third-party systems based on the Web Services Toolkit.

## Affected

- `pcvue >= 8.10, < 12.0.17`

## Remediation

Upgrade past the affected range:

- `pcvue 12.0.17`