How severe is CVE-2017-9851?

CVE-2017-9851 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-9851 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9851?

CVE-2017-9851 affects Sma Sunny Explorer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-9851?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-9851 published?

CVE-2017-9851 was published on 2017-08-05 and last updated on 2026-06-17.

CVE-2017-9851

CVE-2017-9851 is a high-severity vulnerability in Sma Sunny Explorer with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Sma Sunny Explorer
Published: 2017-08-05
Last modified: 2026-06-17

Description

An issue was discovered in SMA Solar Technology products. By sending nonsense data or setting up a TELNET session to the database port of Sunny Explorer, the application can be crashed. NOTE: the vendor reports that the maximum possible damage is a communication failure. Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected

Frequently asked questions

What is CVE-2017-9851?: An issue was discovered in SMA Solar Technology products. By sending nonsense data or setting up a TELNET session to the database port of Sunny Explorer, the application can be crashed. NOTE: the vendor reports that the maximum possible damage is a communication failure. Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected
How severe is CVE-2017-9851?: CVE-2017-9851 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-9851 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9851?: CVE-2017-9851 affects Sma Sunny Explorer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-9851?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-9851 published?: CVE-2017-9851 was published on 2017-08-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sma:sunny_explorer:-:*:*:*:*:*:*:*

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