CVE-2026-40434
HIGHCVSS 8.1/10EPSS 0.23%
Last modified
CVE-2026-40434 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Anviz | Crosschex Standard | All versions |
References
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-106-03US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-40434?
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 a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.
How do I fix CVE-2026-40434?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-40434?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST