Vulnerability Monitor

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CVE-2016-8562

A vulnerability has been identified in SIMATIC CP 1543-1 (All versions < V2.0.28), SIPLUS NET CP 1543-1 (All versions < V2.0.28). Under special conditions it was possible to write SNMP variables on port 161/udp which should be read-only and should only be configured with TIA-Portal. A write to these variables could reduce the availability or cause a denial-of-service.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 4 products from siemens, from siemens, from siemens and 1 other, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2016, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2016-11-18T21:59:02.033

Last Modified

2025-10-22T00:15:56.610

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:S/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

6.8

Impact Score

2.9

Weaknesses

Type: Primary
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	siemens	simatic_cp_1543-1_firmware	< 2.0.28	Yes
Hardware	siemens	simatic_cp_1543-1	-	No
Operating System	siemens	siplus_net_cp_1543-1_firmware	< 2.0.28	Yes
Hardware	siemens	siplus_net_cp_1543-1	-	No

References

http://www.securityfocus.com/bid/94436 Broken Link, Third Party Advisory, VDB Entry ([email protected])
http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-672373.pdf Broken Link, Patch, Vendor Advisory ([email protected])
https://cert-portal.siemens.com/productcert/pdf/ssa-672373.pdf Vendor Advisory ([email protected])
https://ics-cert.us-cert.gov/advisories/ICSA-16-327-01 Third Party Advisory, US Government Resource ([email protected])
http://www.securityfocus.com/bid/94436 Broken Link, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-672373.pdf Broken Link, Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://cert-portal.siemens.com/productcert/pdf/ssa-672373.pdf Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://ics-cert.us-cert.gov/advisories/ICSA-16-327-01 Third Party Advisory, US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-8562 (134c704f-9b21-4f2e-91b3-4a467353bcc0)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For siemens's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.