CVE-2026-40434: Anviz CrossChex Standard lacks source verification in the client/server channel, enabling TCP packet injection by an…

CVE-2026-40434 · Severity: high · CVSS 8.1 · Published 2026-04-17

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.

Vendors: Anviz.

Quick answers

Is CVE-2026-40434 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-40434 being exploited in the wild.
How severe is CVE-2026-40434?
High severity, with a CVSS score of 8.1, published 17 April 2026.
Which products and versions are affected?
Anviz Crosschex Standard. The advisory does not name versions.
Is there a fix for CVE-2026-40434?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-40434?
Check whether you run Anviz Crosschex Standard. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Anviz Crosschex Standard

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