# What is CVE-2023-34412? > CVE-2023-34412 is a medium-severity flaw (CVSS 4.8) in Rex 200 from Helmholz, published on 17 August 2023. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 0.4%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2023-34412 ## At a glance - **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle. - **Precursor Intelligence risk score:** 20 out of 100 (Low); action: Monitor. Kept up to date as the evidence changes. - **Severity:** Medium (CVSS 4.8 out of 10) - **Known to be exploited:** No, not on the list of flaws known to be exploited today - **Chance of use in the next 30 days:** 0.4% (latest exploit-likelihood forecast) - **Published:** 17 August 2023 - **Record last updated:** 29 February 2024 - **Main product:** Rex 200 from Helmholz - **Affected products:** 34 ## What is CVE-2023-34412? In plain terms It can be attacked from anywhere on the internet with an administrator account, but a person has to take an action first. If it works, the attacker can read some data and change some data. ### The official description A vulnerability in Red Lion Europe mbNET/mbNET.rokey and Helmholz REX 200 and REX 250 devices with firmware lower 7.3.2 allows an authenticated remote attacker with high privileges to inject malicious HTML or JavaScript code (XSS). ### What kind of flaw is it? - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') ### How an attack on it works - Where an attacker can be: Anywhere on the internet - How hard it is to pull off: Easy: no special conditions - Login needed first: An administrator account - Does someone have to click: Yes, a person has to take an action - What an attacker gets: Can read some data and change some data Severity vector: `CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N` ## Is CVE-2023-34412 being exploited? Not that we know of It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 0.4%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 0.4%, 0.4%, 0.4%, 0.4%, 0.4%, 0.4%, 0.4%. ### Timeline - 17 August 2023: Published - 29 February 2024: Record last updated ### How Precursor Intelligence ranks it CVE-2023-34412 scores **20 out of 100 (Low)**, with the action "Monitor". Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less: - Evidence it is being exploited: biggest factor - How severe it is: strong factor - How widely exposed it is: smaller factor - Threat activity around it: smaller factor 85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it. ## Who is affected by CVE-2023-34412? The published record lists 34 products. Versions are as published: "before 7.3.2" means every version up to, but not including, 7.3.2. - [Rex 200](https://www.precursorintelligence.com/product/helmholz/rex_200) by [Helmholz](https://www.precursorintelligence.com/vendors/helmholz) (Hardware): version not specified - [Mbnet Mdh 811](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_811) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Hardware): version not specified - [Mbnet Mdh 811 Firmware](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_811_firmware) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Operating system): before 7.3.2 - [Mbnet Mdh 816](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_816) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Hardware): version not specified - [Mbnet Mdh 816 Firmware](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_816_firmware) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Operating system): before 7.3.2 - [Mbnet Mdh 831](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_831) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Hardware): version not specified - [Mbnet Mdh 831 Firmware](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_831_firmware) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Operating system): before 7.3.2 - [Mbnet Mdh 835](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_835) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Hardware): version not specified - [Mbnet Mdh 835 Firmware](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_835_firmware) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Operating system): before 7.3.2 - [Mbnet Mdh 841](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_841) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Hardware): version not specified - [Mbnet Mdh 841 Firmware](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_841_firmware) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Operating system): before 7.3.2 - [Mbnet Mdh 850](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_850) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Hardware): version not specified - [Mbnet Mdh 850 Firmware](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_850_firmware) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Operating system): before 7.3.2 - [Mbnet Mdh 855](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_855) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Hardware): version not specified - [Mbnet Mdh 855 Firmware](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_855_firmware) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Operating system): before 7.3.2 - [Mbnet Mdh 858](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_858) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Hardware): version not specified - [Mbnet Mdh 858 Firmware](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_858_firmware) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Operating system): before 7.3.2 - [Mbnet Mdh 859](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_859) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Hardware): version not specified - [Mbnet Mdh 859 Firmware](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_859_firmware) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Operating system): before 7.3.2 - [Mbnet Mdh 871](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_871) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Hardware): version not specified - [Mbnet Mdh 871 Firmware](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_871_firmware) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Operating system): before 7.3.2 - [Mbnet Mdh 876](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_876) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Hardware): version not specified - [Mbnet Mdh 876 Firmware](https://www.precursorintelligence.com/product/redlion/mbnet_mdh_876_firmware) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Operating system): before 7.3.2 - [Mbnet.rokey Rkh 210](https://www.precursorintelligence.com/product/redlion/mbnet.rokey_rkh_210) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Hardware): version not specified - [Mbnet.rokey Rkh 210 Firmware](https://www.precursorintelligence.com/product/redlion/mbnet.rokey_rkh_210_firmware) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Operating system): before 7.3.2 - [Mbnet.rokey Rkh 216](https://www.precursorintelligence.com/product/redlion/mbnet.rokey_rkh_216) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Hardware): version not specified - [Mbnet.rokey Rkh 216 Firmware](https://www.precursorintelligence.com/product/redlion/mbnet.rokey_rkh_216_firmware) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Operating system): before 7.3.2 - [Mbnet.rokey Rkh 235](https://www.precursorintelligence.com/product/redlion/mbnet.rokey_rkh_235) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Hardware): version not specified - [Mbnet.rokey Rkh 235 Firmware](https://www.precursorintelligence.com/product/redlion/mbnet.rokey_rkh_235_firmware) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Operating system): before 7.3.2 - [Mbnet.rokey Rkh 259](https://www.precursorintelligence.com/product/redlion/mbnet.rokey_rkh_259) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Hardware): version not specified - [Mbnet.rokey Rkh 259 Firmware](https://www.precursorintelligence.com/product/redlion/mbnet.rokey_rkh_259_firmware) by [Redlion](https://www.precursorintelligence.com/vendors/redlion) (Operating system): before 7.3.2 - [Rex 200 Firmware](https://www.precursorintelligence.com/product/helmholz/rex_200_firmware) by [Helmholz](https://www.precursorintelligence.com/vendors/helmholz) (Operating system): before 7.3.2 - [Rex 250](https://www.precursorintelligence.com/product/helmholz/rex_250) by [Helmholz](https://www.precursorintelligence.com/vendors/helmholz) (Hardware): version not specified - [Rex 250 Firmware](https://www.precursorintelligence.com/product/helmholz/rex_250_firmware) by [Helmholz](https://www.precursorintelligence.com/vendors/helmholz) (Operating system): before 7.3.2 ## How do I fix CVE-2023-34412? 1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list. 2. **Apply the vendor’s fix.** Install the latest update from the vendor. The references list where the vendor has published details. 3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in. 4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood. ### References - [cert.vde.com](https://cert.vde.com/en/advisories/VDE-2023-012/) (Third-party advisory) - [cert.vde.com](https://cert.vde.com/en/advisories/VDE-2023-029/) (Third-party advisory) ## Questions ### What is CVE-2023-34412? CVE-2023-34412 is a medium-severity flaw in Rex 200 from Helmholz, published on 17 August 2023. It can be attacked from anywhere on the internet with an administrator account, but a person has to take an action first. If it works, the attacker can read some data and change some data. ### How serious is CVE-2023-34412? It scores 4.8 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2023-34412 is 20 out of 100, which is Low. Its action is "Monitor". No sign of exploitation and a low forecast. Patch it in your normal update cycle. ### Is CVE-2023-34412 being exploited? It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 0.4%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2023-34412 affect? For Rex 200 from Helmholz: version not specified. The record lists 34 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2023-34412? Install the update the vendor names in its advisory. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet. ## Does CVE-2023-34412 affect you? Precursor Intelligence keeps checking for you: - **Tell us what you run.** Pick your software from a list, or let us work it out from your website. - **We match it to every flaw.** Over 400,000 published flaws, checked against your list. - **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it. - **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools. Start free (no card, nothing to install): https://www.precursorintelligence.com/register Book a demo: https://www.precursorintelligence.com/contact