🛡️ CVE-2026-40066 — cx2-lite-firmware

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: Low — an ordinary user account is enough.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: High — total loss, or loss the attacker controls.
• Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2026-40066 is classified as CWE-494: Download of Code Without Integrity Check. Code or updates are fetched and executed without verifying they are authentic and unmodified.

Affected software

CVE-2026-40066 is recorded against 2 packages.

• cx2-lite-firmware
• cx7-firmware

Timeline and source

Published on 17 April 2026 and last revised on 10 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

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

Other advisories for this package

cx2-lite-firmware has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-35546 (9.8 Critical, published 17 Apr 2026)
• CVE-2026-33569 (6.5 Medium, published 17 Apr 2026)
• CVE-2026-32648 (5.3 Medium, published 17 Apr 2026)
• CVE-2026-40461 (7.5 High, published 17 Apr 2026)
• CVE-2026-35682 (8.8 High, published 17 Apr 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-494: Download of Code Without Integrity Check) in other software:

• CVE-2026-12259 (5.3 Medium, published 3 Aug 2026)
• CVE-2026-66398 (published 27 Jul 2026)
• CVE-2026-9037 (published 28 May 2026)
• CVE-2026-9089 (8.8 High, published 21 May 2026)
• CVE-2026-42248 (9.8 Critical, published 29 Apr 2026)
• CVE-2026-34841 (9.8 Critical, published 6 Apr 2026)
• CVE-2026-3502 (7.8 High, published 30 Mar 2026)
• CVE-2026-33075 (8.8 High, published 20 Mar 2026)

Details

Affected Packages

References