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Vulnerability record · CVE-2015-2177 · published 7 March 2015

CVE-2015-2177: Siemens simatic s7-300 cpu firmware improper input validation vulnerability

Siemens · Simatic S7 300 Cpu Firmware

Siemens SIMATIC S7-300 CPU devices allow remote attackers to cause a denial of service (defect-mode transition) via crafted packets on (1) TCP port 102 or (2) Profibus.

7.5 CVSS 3.1 High EPSS 35% · top 1.6% CWE-20 · Improper input validation
7.5CVSS 3.1 base score, v2 7.8
35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

Siemens SIMATIC S7-300 CPU devices allow remote attackers to cause a denial of service (defect-mode transition) via crafted packets on (1) TCP port 102 or (2) Profibus.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/72973
http://www.securitytracker.com/id/1032040 Third Party AdvisoryVDB Entry
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-987029.pdf Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-987029.pdf
https://ics-cert.us-cert.gov/advisories/ICSA-15-064-04
https://www.exploit-db.com/exploits/44802/
http://www.securityfocus.com/bid/72973
http://www.securitytracker.com/id/1032040 Third Party AdvisoryVDB Entry
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-987029.pdf Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-987029.pdf
https://ics-cert.us-cert.gov/advisories/ICSA-15-064-04
https://www.exploit-db.com/exploits/44802/

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2022-25622Siemens simatic cfu diq firmware uncontrolled resource consumption vulnerabilityThe PROFINET (PNIO) stack, when integrated with the Interniche IP stack, improperly handles internal resources for TCP segments where the minimum TCP…EPSS 0.88%7.5CVE-2019-19300Siemens ktk ate530s firmware uncontrolled resource consumption vulnerabilityA vulnerability has been identified in Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200, Development/Evaluation Kits for PROFINET IO: EK-ERT…EPSS 1.7%7.5CVE-2019-18336Siemens simatic s7-300 cpu firmware uncontrolled resource consumption vulnerabilityA vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V3.X.17), SIMATIC TDC…EPSS 1.7%7.5CVE-2019-10923Siemens cp1604 firmware uncontrolled resource consumption vulnerabilityAn attacker with network access to an affected product may cause a denial of service condition by breaking the real-time synchronization (IRT) of the…EPSS 1.4%7.5CVE-2019-10936Siemens dk standard ethernet controller firmware uncontrolled resource consumption vulnerabilityAffected devices improperly handle large amounts of specially crafted UDP packets. This could allow an unauthenticated remote attacker to trigger a d…EPSS 2.1%7.5CVE-2016-9158Siemens simatic s7-300 cpu firmware improper input validation vulnerabilityA vulnerability has been identified in SIMATIC S7-300 CPU family (All versions), SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS varia…EPSS 3.0%5.9CVE-2016-9159Siemens simatic s7-300 cpu firmware information exposure vulnerabilityA vulnerability has been identified in SIMATIC S7-300 CPU family (All versions), SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS varia…EPSS 1.5%9.5CVE-2026-93952Arista velocloud orchestrator improper input validation vulnerabilityVeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access privileged internal functionality an…KEVEPSS 0.90%

Source: NIST National Vulnerability Database (record CVE-2015-2177), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.