CVE-2026-40434 Anviz CrossChex Standard Improper Verification of Source of a Communication Channel
An attacker on the same network can inject TCP packets to alter or disrupt traffic in Anviz CrossChex Standard due to lack of source verification.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-40434?
CVE-2026-40434 is a high-severity vulnerability in Anviz CrossChex Standard, published on 17 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-940
Which versions are affected by CVE-2026-40434?
It affects 1 product.
Products include Anviz Crosschex Standard.
How do I fix CVE-2026-40434?
No fix has been published for CVE-2026-40434 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-40434 being exploited?
There is no known exploitation of CVE-2026-40434 in the wild and no public exploit code.
Other vulnerabilities in Anviz CrossChex Standard
Sources
Also known as GHSA-qg37-cwrh-945r.