---
id: CVE-2025-13926
title: |-
  An attacker could use data obtained by sniffing the network traffic to 
  forge packets in order to make arbitrary requests to Contemporary 
  Controls BASC 20T.
summary: |-
  An attacker could use data obtained by sniffing the network traffic to 
  forge packets in order to make arbitrary requests to Contemporary 
  Controls BASC 20T.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-807
  - CWE-807
published: '2026-04-09'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T22:10:00.273'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-13926'
references:
  - url: >-
      https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-099-01.json
    label: ics-cert@hq.dhs.gov
  - url: 'https://www.ccontrols.com/support/contacttech.htm'
    label: ics-cert@hq.dhs.gov
  - url: 'https://www.cisa.gov/news-events/ics-advisories/icsa-26-099-01'
    label: ics-cert@hq.dhs.gov
tags:
  - nvd
epss: 0.00443
epssPercentile: 0.36175
ingestedAt: '2026-09-30T22:27:27.750Z'
---

## Overview

An attacker could use data obtained by sniffing the network traffic to 
forge packets in order to make arbitrary requests to Contemporary 
Controls BASC 20T.

## Remediation

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