Is CVE-2017-9853 in the CISA KEV catalog?

No. CVE-2017-9853 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-9853?

CVE-2017-9853 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2017-9853?

CVE-2017-9853 has an EPSS score of 1.72% (75th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2017-9853?

No published fix for CVE-2017-9853 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2017-9853

CRITICALEPSS 75th pctl

9.8

CVSS v3

NVD

Description

An issue was discovered in SMA Solar Technology products. All inverters have a very weak password policy for the user and installer password. No complexity requirements or length requirements are set. Also, strong passwords are impossible due to a maximum of 12 characters and a limited set of characters. NOTE: the vendor reports that the 12-character limit provides "a very high security standard." Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected

CWE-521

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

1.72%probability of exploitation in 30 days

75thpercentile

Elevated risk: more likely to be exploited than 75% of all known CVEs.

References

Third-Party Advisory1

horusscenario.com

Other references2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.