Anviz CX7 Firmware: Download of Code Without Integrity Check
CVE-2026-40066 is a high-severity download of code without integrity check vulnerability in Anviz CX7 Firmware from Anviz, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected Anviz CX7 Firmware versions: All versions. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.42% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Anviz CX7 Firmware you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Anviz | Anviz CX7 Firmware | All versions | Not stated |
| Anviz | Anviz CX2 Lite Firmware | All versions | Not stated |
| Anviz | Cx7 Firmware | Not specified in the record | Not stated |
| Anviz | Cx2 Lite Firmware | Not specified in the record | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (hq.dhs.gov).
Official description
Anviz CX2 Lite and CX7 are vulnerable to unverified update packages that can be uploaded. The device unpacks and executes a script resulting in unauthenticated remote code execution.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Download of Code Without Integrity Check
The product downloads source code or an executable from a remote location and executes the code without sufficiently verifying the origin and integrity of the code.
How developers prevent this class of flaw
- Perform proper forward and reverse DNS lookups to detect DNS spoofing.
- Encrypt the code with a reliable encryption scheme before transmitting.
- Run your code using the lowest privileges that are required to accomplish the necessary tasks. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.
More Download of Code Without Integrity Check vulnerabilities (CWE-494)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-106-03.jsonThird Party Advisory
- cisa.gov/news-events/ics-advisories/icsa-26-106-03US Government Resource
Other references
- anviz.com/contact-us.htmlProduct
Other vulnerabilities in Anviz CX7 Firmware
- 7.5 High severity
- 9.8 Critical severity
- 7.7 High severity
Recent Download of Code Without Integrity Check vulnerabilities
- 9.8 Critical severity
- 7.8 High severity
- 8.8 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
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