# CVE-2025-24812: Other in SIMATIC S7-1200 CPU 1211C AC/DC/Rly > A vulnerability in Siemens SIMATIC S7-1200 PLCs allows for potential security bypass or logic errors, requiring firmware updates to mitigate. - **Severity:** High 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** No - **Published:** 11 Feb 2025 - **Updated:** 12 Feb 2025 - **Also known as:** GHSA-vf94-73hj-24cm ## What is CVE-2025-24812? CVE-2025-24812 is a high-severity vulnerability in Siemens SIMATIC S7-1200 CPU 1211C AC/DC/Rly, published on 11 Feb 2025. Any signed-in user can exploit it over the network, with no action from the victim. ### Official description A vulnerability has been identified in SIMATIC S7-1200 CPU 1211C AC/DC/Rly (6ES7211-1BE40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1211C DC/DC/DC (6ES7211-1AE40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1211C DC/DC/Rly (6ES7211-1HE40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1212C AC/DC/Rly (6ES7212-1BE40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1212C DC/DC/DC (6ES7212-1AE40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1212C DC/DC/Rly (6ES7212-1HE40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1212FC DC/DC/DC (6ES7212-1AF40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1212FC DC/DC/Rly (6ES7212-1HF40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1214C AC/DC/Rly (6ES7214-1BG40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1214C DC/DC/DC (6ES7214-1AG40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1214C DC/DC/Rly (6ES7214-1HG40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1214FC DC/DC/DC (6ES7214-1AF40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1214FC DC/DC/Rly (6ES7214-1HF40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1215C AC/DC/Rly (6ES7215-1BG40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1215C DC/DC/DC (6ES7215-1AG40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1215C DC/DC/Rly (6ES7215-1HG40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1215FC DC/DC/DC (6ES7215-1AF40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1215FC DC/DC/Rly (6ES7215-1HF40-0XB0) (All versions < V4.7), SIMATIC S7-1200 CPU 1217C DC/DC/DC (6ES7217-1AG40-0XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1212 AC/DC/RLY (6AG1212-1BE40-2XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1212 AC/DC/RLY (6AG1212-1BE40-4XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1212 DC/DC/RLY (6AG1212-1HE40-2XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1212 DC/DC/RLY (6AG1212-1HE40-4XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1212C DC/DC/DC (6AG1212-1AE40-2XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1212C DC/DC/DC (6AG1212-1AE40-4XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1212C DC/DC/DC RAIL (6AG2212-1AE40-1XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1214 AC/DC/RLY (6AG1214-1BG40-2XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1214 AC/DC/RLY (6AG1214-1BG40-4XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1214 AC/DC/RLY (6AG1214-1BG40-5XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1214 DC/DC/DC (6AG1214-1AG40-2XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1214 DC/DC/DC (6AG1214-1AG40-4XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1214 DC/DC/DC (6AG1214-1AG40-5XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1214 DC/DC/RLY (6AG1214-1HG40-2XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1214 DC/DC/RLY (6AG1214-1HG40-4XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1214 DC/DC/RLY (6AG1214-1HG40-5XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1214C DC/DC/DC RAIL (6AG2214-1AG40-1XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1214FC DC/DC/DC (6AG1214-1AF40-5XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1214FC DC/DC/RLY (6AG1214-1HF40-5XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1215 AC/DC/RLY (6AG1215-1BG40-2XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1215 AC/DC/RLY (6AG1215-1BG40-4XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1215 AC/DC/RLY (6AG1215-1BG40-5XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1215 DC/DC/DC (6AG1215-1AG40-2XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1215 DC/DC/DC (6AG1215-1AG40-4XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-2XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-4XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1215 DC/DC/RLY (6AG1215-1HG40-5XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1215C DC/DC/DC (6AG1215-1AG40-5XB0) (All versions < V4.7), SIPLUS S7-1200 CPU 1215FC DC/DC/DC (6AG1215-1AF40-5XB0) (All versions < V4.7). Affected devices do not process correctly certain special crafted packets sent to port 102/tcp, which could allow an attacker to cause a denial of service in the device. Weakness: CWE-1286 (Improper Validation of Syntactic Correctness of Input) ## Which versions are affected by CVE-2025-24812? ## How do I fix CVE-2025-24812? No fix has been published for CVE-2025-24812 yet. Limit exposure of the affected software until one is available. ## Is CVE-2025-24812 being exploited? There is no known exploitation of CVE-2025-24812 in the wild and no public exploit code. ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2025-24812 and fix it if it is affected. What it is: CVE-2025-24812 is a high-severity vulnerability in Siemens SIMATIC S7-1200 CPU 1211C AC/DC/Rly, published on 11 Feb 2025. Any signed-in user can exploit it over the network, with no action from the victim. Exploitation: There is no known exploitation of CVE-2025-24812 in the wild and no public exploit code. Affected product: Siemens SIMATIC S7-1200 CPU 1211C AC/DC/Rly. 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-2025-24812/ (Markdown: https://insights.sbomify.com/CVE-2025-24812/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2025-24812 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-24812 - OSV: https://osv.dev/vulnerability/CVE-2025-24812 --- From sbomify Insights: https://insights.sbomify.com/CVE-2025-24812/ Summaries are generated and may contain mistakes; the official description above is the record.