CVE-2016-8562

A vulnerability has been identified in SIMATIC CP 1543-1 (All versions < V2.0.28), SIPLUS NET CP...

7.5 HighIn KEV

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

3.61%Up 2.5 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

Record: CVE-2016-8562
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 3.5 LowAV:N/AC:M/Au:S/C:N/I:N/A:P
Updated: 2026-11-02

CVE List 7.5

Record: CVE-2016-8562
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

EUVDEUVD-2016-9410 7.5

Record: EUVD-2016-9410
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-f87x-hp4c-9cvw 5.3

A vulnerability has been identified in SIMATIC CP 1543-1 (All versions < V2.0.28), SIPLUS NET CP...

Record: GHSA-f87x-hp4c-9cvw
CVSS 3.0: 5.3 MediumCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-20
Updated: 2026-11-02

CISA KEV No score

Siemens SIMATIC CP 1543-1 Improper Privilege Management Vulnerability

An improper privilege management vulnerability exists within the Siemens SIMATIC Communication Processor (CP) that allows a privileged attacker to remotely cause a denial of service.

Record: CVE-2016-8562
Weakness: CWE-20
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, CISA KEV, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-8562 is a high vulnerability (CVSS 7.5) in Siemens Simatic Cp, published November 18, 2016. CISA lists it as known to be exploited, since March 3, 2022. EUVD reports exploitation since March 3, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.61%, the 89th percentile. No source names a fixed version.