# CVE-2020-26868

## Summary

- **CVE ID:** CVE-2020-26868
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** CWE-767
- **Published:** Oct 12, 2020
- **Last Modified:** Mar 14, 2026

## Description

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 Products

- ARC Informatique — PcVue (unspecified)

## References

- [CNA](https://us-cert.cisa.gov/ics/advisories/icsa-20-308-03)
- [CNA](https://www.pcvuesolutions.com/security)
- [CNA](https://ics-cert.kaspersky.com/advisories/klcert-advisories/2020/10/09/klcert-20-016-denial-of-service-in-arc-informatique-pcvue/)
- [CNA](https://www.pcvuesolutions.com/support/index.php/en/security-bulletin/1076-security-bulletin-2020-1)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 1.11%
- **EPSS Percentile:** 77.8

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._