Anviz CrossChex Vulnerability Allows Network Packet Injection
The National Vulnerability Database has identified CVE-2026-40434, a critical vulnerability affecting Anviz CrossChex Standard. The issue stems from a lack of source verification in the client/server communication channel. This oversight allows an attacker within the same network to inject TCP packets, enabling them to manipulate or disrupt application traffic.
With a CVSS score of 8.1 (HIGH), this vulnerability poses a significant risk. Attackers can exploit this weakness without authentication or user interaction, leading to potentially severe data integrity and availability compromises. Organizations relying on Anviz CrossChex for access control or other critical functions should prioritize addressing this flaw to prevent unauthorized data manipulation or service disruption.
What This Means For You
- If your organization uses Anviz CrossChex Standard, immediately investigate its network segmentation. Determine if the client/server communication can be exposed to untrusted network segments and implement strict network access controls to isolate these components. Patching or upgrading the Anviz CrossChex Standard software should be a top priority to mitigate the risk of TCP packet injection.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
Anviz CrossChex TCP Packet Injection - CVE-2026-40434
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-40434 | Vulnerability | CVE-2026-40434 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 17, 2026 at 23:16 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
Believe this infringes your rights? Submit a takedown request.
Related Posts
Radare2 Command Injection Flaw Exposes Analysis Workflow
CVE-2026-40527 — radare2 prior to commit bc5a890 contains a command injection vulnerability in the afsv/afsvj command path where crafted ELF binaries can embed malicious r2...
zrok Heap Overflow: Unauthenticated DoS Risk
CVE-2026-40303 — zrok is software for sharing web services, files, and network resources. Prior to version 2.0.1, endpoints.GetSessionCookie parses an attacker-supplied cookie chunk count and...
CVE-2026-40302 — zrok is software for sharing web services, files, and
CVE-2026-40302 — zrok is software for sharing web services, files, and network resources. Prior to version 2.0.1, the proxyUi template engine uses Go's text/template (which...