CVE-2026-40434

HIGH

Anviz CrossChex Standard Improper Verification of Source of a Communication Channel

Title source: cna

Description

Anviz CrossChex Standard lacks source verification in the client/server channel, enabling TCP packet injection by an attacker on the same network to alter or disrupt application traffic.

References (3)

Core 3

Core References

https://www.anviz.com/contact-us.html

https://www.cisa.gov/news-events/ics-advisories/icsa-26-106-03

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-106-03.json

View Writeup ZIP pw:eip

Scores

CVSS v3 8.1

EPSS 0.0023

EPSS Percentile 13.7%

Attack Vector ADJACENT_NETWORK

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-940

Status published

Products (2)

Anviz/Anviz CrossChex Standard All versions

anviz/crosschex_standard

Published Apr 17, 2026

Tracked Since Apr 18, 2026