🛡️ CVE-2026-40434 — crosschex-standard

🟠 CVSS 8.1 — High ✅ No Known Exploit CWE-940 NVD
8.1
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached from an adjacent network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity high, availability high.

Affected software

CVE-2026-40434 is recorded against 1 package.

  • crosschex-standard

Timeline and source

Published on 17 April 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com
www.anviz.com
www.cisa.gov

Details

Severity HIGH
CVSS Score 8.1
CVSS Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CWE CWE-940
Public Exploit ✅ No
Source NVD
Published 2026-04-17
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
crosschex-standard — —

Similar Threats

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