# 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.

- Page: https://www.vulneraibility.com/cve/CVE-2016-8562
- CVSS: 7.5
- Known exploited: yes, in CISA KEV since 2022-03-03; CISA due date 2022-03-24
- EPSS: 3.61% (percentile 89.6)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-02-04)
- Published: 2016-11-18

## Affected

- siemens:simatic_cp_1543-1_firmware
- siemens:siplus_net_cp_1543-1_firmware

## References

- [other] http://www.securityfocus.com/bid/94436
- [other] https://ics-cert.us-cert.gov/advisories/ICSA-16-327-01
- [other] http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-672373.pdf
- [other] https://cert-portal.siemens.com/productcert/pdf/ssa-672373.pdf
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-8562

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.