Is CVE-2026-40434 actively exploited?

No active exploitation of CVE-2026-40434 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-40434 be exploited remotely?

Partially. CVE-2026-40434 requires adjacent network access (same network segment) to exploit.

What is the CVSS score of CVE-2026-40434?

CVE-2026-40434 has a CVSS score of 8.1 (HIGH).

HOME VULNERABILITIESCVE-2026-40434

HIGH

CVE-2026-40434

CWE-940Published: April 17, 2026· Updated: Apr 20, 2026

8.1

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:4.9th

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.

NVD Source

Technical Analysis

CVE-2026-40434 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

News & Research Mentioning CVE-2026-40434

Anviz Multiple Products

CISA Alerts· Apr 16, 2026

View CSAF Summary Successful exploitation of these vulnerabilities could allow attackers to conduct reconnaissance, capture or decrypt sensitive data, alter device configurations, gain unauthorized administrative or root‑level access, execute arbitrary code, compromise credentials or communications, and ultimately obtain full control over affected devices. The following versions of Anviz Multiple Products are affected: CX2 Lite Firmware vers:all/* (CVE-2026-32648, CVE-2026-40461, CVE-2026-35682, CVE-2026-35546, CVE-2026-40066, CVE-2026-33569) CX7 Firmware vers:all/* (CVE-2026-33093, CVE-2026-35061, CVE-2026-32648, CVE-2026-40461, CVE-2026-35546, CVE-2026-40066, CVE-2026-32324, CVE-2026-31927, CVE-2026-33569) CrossChex Standard vers:all/* (CVE-2026-40 [xlite_meta score:69 src:CISA Alerts xlite_fp:1f2b0b4db0f5a75463bc932eefc2a8d26a7ff198c9437ee500e80f200e5a95dc]