# CVE-2022-45789: Auth bypass in EcoStruxure Control Expert > Attackers can hijack authenticated Modbus sessions to execute unauthorized functions on Schneider Electric PLCs and controllers. - **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** No - **Published:** 31 Jan 2023 - **Updated:** 29 May 2026 - **Also known as:** GHSA-c7w2-f8m6-pxp8 ## What is CVE-2022-45789? CVE-2022-45789 is a high-severity authentication bypass vulnerability in Schneider Electric EcoStruxure Control Expert , published on 31 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description A CWE-294: Authentication Bypass by Capture-replay vulnerability exists that could cause execution of unauthorized Modbus functions on the controller when hijacking an authenticated Modbus session. Affected Products: EcoStruxure Control Expert (All Versions), EcoStruxure Process Expert (All Versions), Modicon M340 CPU - part numbers BMXP34* (All Versions), Modicon M580 CPU - part numbers BMEP* and BMEH* (All Versions), Modicon M580 CPU Safety - part numbers BMEP58*S and BMEH58*S (All Versions) Weakness: CWE-294 (Authentication Bypass by Capture-replay) ## Which versions are affected by CVE-2022-45789? It affects 37 products. Products: Schneider-Electric Ecostruxure Control Expert, Schneider-Electric Ecostruxure Process Expert, Schneider-Electric Modicon M340 Bmxp341000 Firmware, Schneider-Electric Modicon M340 Bmxp342000 Firmware, Schneider-Electric Modicon M340 Bmxp3420102 Firmware, Schneider-Electric Modicon M340 Bmxp342010 Firmware, Schneider-Electric Modicon M340 Bmxp342020 Firmware, Schneider-Electric Modicon M340 Bmxp342020h Firmware, Schneider-Electric Modicon M340 Bmxp3420302 Firmware, Schneider-Electric Modicon M340 Bmxp3420302h Firmware, Schneider-Electric Modicon M340 Bmxp342030 Firmware, Schneider-Electric Modicon M340 Bmxp342030h Firmware, Schneider-Electric Modicon M580 Bmeh582040 Firmware, Schneider-Electric Modicon M580 Bmeh582040c Firmware, Schneider-Electric Modicon M580 Bmeh582040s Firmware, Schneider-Electric Modicon M580 Bmeh584040 Firmware, Schneider-Electric Modicon M580 Bmeh584040c Firmware, Schneider-Electric Modicon M580 Bmeh584040s Firmware, Schneider-Electric Modicon M580 Bmeh586040 Firmware, Schneider-Electric Modicon M580 Bmeh586040c Firmware and 17 more. ## How do I fix CVE-2022-45789? No fix has been published for CVE-2022-45789 yet. Limit exposure of the affected software until one is available. ## Is CVE-2022-45789 being exploited? There is no known exploitation of CVE-2022-45789 in the wild and no public exploit code. ## Other vulnerabilities in Schneider Electric EcoStruxure Control Expert - [CVE-2022-37300](https://insights.sbomify.com/CVE-2022-37300/): Auth bypass in EcoStruxure Control Expert (critical 9.8) - [CVE-2020-28212](https://insights.sbomify.com/CVE-2020-28212/): Auth bypass in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) (critical 9.8) - [CVE-2020-7475](https://insights.sbomify.com/CVE-2020-7475/): Code injection in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20), Modicon M580 (all versions prior to V3.10) (critical 9.8) - [CVE-2023-27976](https://insights.sbomify.com/CVE-2023-27976/): Other in EcoStruxure Control Expert (high 8.8) - [CVE-2020-28213](https://insights.sbomify.com/CVE-2020-28213/): Code injection in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) (high 8.8) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2022-45789 and fix it if it is affected. What it is: CVE-2022-45789 is a high-severity authentication bypass vulnerability in Schneider Electric EcoStruxure Control Expert , published on 31 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: There is no known exploitation of CVE-2022-45789 in the wild and no public exploit code. Affected product: Schneider Electric EcoStruxure Control Expert . No package-level version data is available, so check the vendor advisory linked from the reference page. Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2022-45789/ (Markdown: https://insights.sbomify.com/CVE-2022-45789/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2022-45789 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-45789 - OSV: https://osv.dev/vulnerability/CVE-2022-45789 --- From sbomify Insights: https://insights.sbomify.com/CVE-2022-45789/ Summaries are generated and may contain mistakes; the official description above is the record.