CVE-2019-18336
7.5 · HIGHOverview
CVE-2019-18336 is a high-severity vulnerability affecting siemens simatic_s7-300_cpu_firmware. It was published on March 10, 2020 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V3.X.17), SIMATIC TDC CP51M1 (All versions < V1.1.8), SIMATIC TDC CPU555 (All versions < V1.1.1), SINUMERIK 840D sl (All versions < V4.8.6), SINUMERIK 840D sl (All versions < V4.94). Specially crafted packets sent to port 102/tcp (Profinet) could cause the affected device to go into defect mode. A restart is required in order to recover the system. Successful exploitation requires an attacker to have network access to port 102/tcp, with no authentication. No user interation is required. At the time of advisory publication no public exploitation of this security vulnerability was known.
Remediation
Check the references section for vendor advisories and patches from siemens. Update simatic_s7-300_cpu_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| siemens | simatic_s7-300_cpu_firmware | >= 0, < 3.3.17 | Affected |
| siemens | simatic_s7-300_cpu_312_ifm_firmware | >= 0, < 3.3.17 | Affected |
| siemens | simatic_s7-300_cpu_313_firmware | >= 0, < 3.3.17 | Affected |
| siemens | simatic_s7-300_cpu_314_firmware | >= 0, < 3.3.17 | Affected |
| siemens | simatic_s7-300_cpu_314_ifm_firmware | >= 0, < 3.3.17 | Affected |
| siemens | simatic_s7-300_cpu_315_firmware | >= 0, < 3.3.17 | Affected |
| siemens | simatic_s7-300_cpu_315-2_dp_firmware | >= 0, < 3.3.17 | Affected |
| siemens | simatic_s7-300_cpu_316-2_dp_firmware | >= 0, < 3.3.17 | Affected |
| siemens | simatic_s7-300_cpu_318-2_firmware | >= 0, < 3.3.17 | Affected |
| siemens | sinumerik_840d_sl | >= 0, < 4.8.6 | Affected |
| siemens | simatic_tdc_cp51m1_firmware | >= 0, < 1.1.8 | Affected |
Frequently Asked Questions
What is CVE-2019-18336?
CVE-2019-18336 is a high-severity vulnerability affecting siemens simatic_s7-300_cpu_firmware. It was published on March 10, 2020 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2019-18336?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2019-18336?
Check the references section for vendor advisories and patches from siemens. Update simatic_s7-300_cpu_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2019-18336?
CyberStrike's AI-powered security agents can automatically detect CVE-2019-18336 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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