CVE-2016-8562

siemens simatic cp 1543-1 firmware, siemens siplus net cp 1543-1 firmware

Published 18 Nov 2016 · updated 17 Jun 2026 · Analyzed

7.5 High · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 3 Mar 2022, with a remediation deadline of 24 Mar 2022 for US federal agencies.

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.

References

www.securityfocus.com/bid/94436 · Broken Link, Third Party Advisory, VDB Entry
www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-672373.pdf · Broken Link, Patch, Vendor Advisory
cert-portal.siemens.com/productcert/pdf/ssa-672373.pdf · Vendor Advisory
ics-cert.us-cert.gov/advisories/ICSA-16-327-01 · Third Party Advisory, US Government Resource
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-8562 · US Government Resource