CVEs / CVE-2016-8562
CVE-2016-8562: Siemens SIMATIC CP 1543-1 Improper Privilege Management Vulnerability
- Known exploited in the CISA KEV catalog since 3 Mar 2022
- high 7.5 CVSS 3.1 (NVD)
- EPSS 3.61% chance of exploitation in the next 30 days, higher than 89% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
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.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| n/a n/a | n/a | — |
Exploitation
| In CISA KEV since | 3 Mar 2022 |
|---|---|
| Due date for US federal agencies | 24 Mar 2022 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 7.5 highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|
References
- CVE-2016-8562 on NVD
- CVE-2016-8562 in the CISA KEV catalog
- http://www.securityfocus.com/bid/94436 Broken Link, Third Party Advisory, VDB Entry
- http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-672373.pdf Broken Link, Patch, Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-672373.pdf Vendor Advisory
- https://ics-cert.us-cert.gov/advisories/ICSA-16-327-01 Third Party Advisory, US Government Resource
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-8562 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.