CVE-2016-8562
High 7.5 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Siemens SIMATIC CP 1543-1 Improper Privilege Management Vulnerability
- Added to catalog
- Remediation due date (US federal)
- 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.
Metrics
- CVSS 3.1
-
7.5 (HIGH)
Score source: NVD
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 4% (percentile: 89) as of 1 November 2026
Affected products
siemens: simatic cp 1543-1 firmware; siemens: simatic cp 1543-1; siemens: siplus net cp 1543-1 firmware; siemens: siplus net cp 1543-1
References
- http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-672373.pdf Broken LinkPatchVendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-672373.pdf Vendor Advisory
- http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-672373.pdf Broken LinkPatchVendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-672373.pdf Vendor Advisory
- http://www.securityfocus.com/bid/94436 Broken LinkThird Party AdvisoryVDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-16-327-01 Third Party AdvisoryUS Government Resource
- http://www.securityfocus.com/bid/94436 Broken LinkThird Party AdvisoryVDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-16-327-01 Third Party AdvisoryUS Government Resource
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016… US Government Resource