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Case File

CVE-2017-9855

CRITICAL · CVSS 9.8 EPSS 1.58%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2017-08-05 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. See the original NVD description below for full technical details.

CVE
CVE-2017-9855
Severity
CRITICAL
CVSS
9.8
EPSS
1.58%

Original NVD Description

An issue was discovered in SMA Solar Technology products. A secondary authentication system is available for Installers called the Grid Guard system. This system uses predictable codes, and a single Grid Guard code can be used on any SMA inverter. Any such code, when combined with the installer account, allows changing very sensitive parameters. NOTE: the vendor reports that Grid Guard is not an authentication feature; it is only a tracing feature. Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected

Related CVEs

Other vulnerabilities affecting the same vendor(s)