CVE-2023-40158

8.8 HIGH 1% exploit odds Fix listed

What it is

Hidden functionality vulnerability in the CBC products allows a remote authenticated attacker to execute an arbitrary OS command on the device or alter its settings. As for the affected products/versions, see the detailed information provided by the vendor. Note that NR4H, NR8H, NR16H series and DR-16F, DR-8F, DR-4F, DR-16H, DR-8H, DR-4H, DR-4M41 series are no longer supported, therefore updates for those products are not provided.

At a glance

Exploitability: Can be exploited over the network with a low-privilege account. High risk of data exposure, data tampering, service disruption.
Exploit odds: 1.3% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2023-08-23 03:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 06:16 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 1.3% in the next 30 days (EPSS).
Severity: 8.8 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2023-08-23 03:15 UTC
Last modified: 2026-06-17 06:16 UTC
Exploit probability: 1.3% · EPSS, next 30 days
Weakness: CWE-912
Record status: Modified

Affected

Cbc nr4h Firmware
Cbc nr8h Firmware
Cbc nr16h Firmware
Cbc dr-16f42a Firmware
Cbc dr-16f45at Firmware
Cbc dr-8f42a Firmware
Cbc dr-8f45at Firmware
Cbc dr-4fx1 Firmware

Attack profile CVSS 3.1 · 8.8

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-40158.md and follow it. Check whether this project is affected by CVE-2023-40158. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record