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CVE-2016-8562

7.5, high Known exploited

Siemens SIMATIC CP 1543-1 Improper Privilege Management Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
7.5, high high CVSS v3.1
EPSS, next 30 days
4% higher than 89.3% of scored CVEs
Exploitation
Confirmed in the wild
Published
18 Nov 20169 years ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 3 Mar 2022. US federal agencies had to remediate by 24 Mar 2022, a deadline that has passed.

Required action. Apply updates per vendor instructions.

Description

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.

Details

Vendor
Siemens
Product
Simatic Cp 1543-1 Firmware
Weakness
n/a
Status
Analyzed
Updated
17 Jun 2026
Assigner
cve@mitre.org

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

References 5

Patches and fixes 1

Advisories 3

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Siemens CVEs

Every Siemens CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-44415 Affected systems do not properly restrict access to internal APIs and paths for authenticated users EPSS 0.5% 9.1, critical
  • CVE-2026-63353 Siemens SIMATIC Drive Controller CPU 1504D TF Cross-Site Scripting Vulnerability EPSS 0.4% 9.6, critical
  • CVE-2026-63354 Siemens SIMATIC Drive Controller CPU 1504D TF Cross-Site Scripting Vulnerability EPSS 0.5% 9.6, critical
  • CVE-2026-102073 Siemens APOGEE MBC (PPC) (BACnet) Integer Underflow Vulnerability EPSS 0.5% 8.2, high
  • CVE-2026-59241 A vulnerability has been identified in SIMATIC WinCC V7.5 (All versions), SIMATIC WinCC V8.0 (All versions < V8.0 Update 11), SIMATIC… EPSS 0.5% 8.8, high
  • CVE-2026-72895 A vulnerability has been identified in SIMATIC IPC BX-21A (All versions < V31.01.13), SIMATIC IPC RW-543A (All versions < V1.1.4),… EPSS 0.1% 7.7, high
  • CVE-2026-78556 A vulnerability has been identified in Industrial Edge App Publisher (All versions < V1.27.9) EPSS 0.2% 7.4, high
  • CVE-2026-85114 Siemens .NET Client Library for SIMATIC S7 Webserver API Path Traversal Vulnerability EPSS 0.4% 7.5, high

Beyond this page

Is CVE-2016-8562 in your network?

This page tells you how dangerous CVE-2016-8562 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2016-8562 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 16 Oct 2026, not the live upstream state.