CVE-2023-44487
7.5 · HIGH Actively ExploitedOverview
CVE-2023-44487 is a high-severity vulnerability affecting siemens simatic_s7-1500_cpu_1518f-4_pn\/dp_mfp_firmware. It was published on October 10, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
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
The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.
Remediation
Check the references section for vendor advisories and patches from siemens. Update simatic_s7-1500_cpu_1518f-4_pn\/dp_mfp_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_s7-1500_cpu_1518f-4_pn\/dp_mfp_firmware | 3.1.5 | Affected |
| siemens | sinec_ins | >= 0, < 1.0 | Affected |
| siemens | sinec_nms | >= 0, < 3.0 | Affected |
| siemens | st7_scadaconnect | >= 0, < 1.1 | Affected |
| siemens | simatic_s7-1500_cpu_1518-4_pn\/dp_mfp_firmware | 3.1.5 | Affected |
| siemens | siplus_s7-1500_cpu_1518-4_pn\/dp_mfp_firmware | 3.1.5 | Affected |
| nghttp2 | nghttp2 | >= 0, < 1.57.0 | Affected |
| netty | netty | >= 0, < 4.1.100 | Affected |
| eclipse | jetty | >= 0, < 9.4.53 | Affected |
| caddyserver | caddy | >= 0, < 2.7.5 | Affected |
| golang | go | >= 0, < 1.20.10 | Affected |
| golang | http2 | >= 0, < 0.17.0 | Affected |
| golang | networking | >= 0, < 0.17.0 | Affected |
References
Frequently Asked Questions
What is CVE-2023-44487?
CVE-2023-44487 is a high-severity vulnerability affecting siemens simatic_s7-1500_cpu_1518f-4_pn\/dp_mfp_firmware. It was published on October 10, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
How severe is CVE-2023-44487?
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-2023-44487?
Check the references section for vendor advisories and patches from siemens. Update simatic_s7-1500_cpu_1518f-4_pn\/dp_mfp_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-2023-44487?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-44487 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.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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