CVE-2026-40434 — HIGH (8.1)

Vulnerability 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.

CVSS Score

8.1

HIGH

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

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Anviz	Crosschex Standard	-

Related Weaknesses (CWE)

CWE-940

References

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-10Third Party Advisory
https://www.anviz.com/contact-us.htmlProduct
https://www.cisa.gov/news-events/ics-advisories/icsa-26-106-03US Government Resource

FAQ

What is CVE-2026-40434?

CVE-2026-40434 is a vulnerability with a CVSS score of 8.1 (HIGH). 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.

How severe is CVE-2026-40434?

CVE-2026-40434 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-40434?

Check the references section above for vendor advisories and patch information. Affected products include: Anviz Crosschex Standard.