How severe is CVE-2017-9854?

CVE-2017-9854 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-9854 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9854?

CVE-2017-9854 primarily affects Sma Sunny Boy 3600 Firmware. In total, 39 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-9854?

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

When was CVE-2017-9854 published?

CVE-2017-9854 was published on 2017-08-05 and last updated on 2026-06-17.

CVE-2017-9854

CVE-2017-9854 is a critical-severity vulnerability in Sma Sunny Boy 3600 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-311.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-311
Affected product: Sma Sunny Boy 3600 Firmware
Published: 2017-08-05
Last modified: 2026-06-17

Description

An issue was discovered in SMA Solar Technology products. By sniffing for specific packets on the localhost, plaintext passwords can be obtained as they are typed into Sunny Explorer by the user. These passwords can then be used to compromise the overall device. NOTE: the vendor reports that exploitation likelihood is low because these packets are usually sent only once during installation. 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-2017-9854?: An issue was discovered in SMA Solar Technology products. By sniffing for specific packets on the localhost, plaintext passwords can be obtained as they are typed into Sunny Explorer by the user. These passwords can then be used to compromise the overall device. NOTE: the vendor reports that exploitation likelihood is low because these packets are usually sent only once during installation. 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-2017-9854?: CVE-2017-9854 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-9854 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9854?: CVE-2017-9854 primarily affects Sma Sunny Boy 3600 Firmware. In total, 39 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-9854?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-9854 published?: CVE-2017-9854 was published on 2017-08-05 and last updated on 2026-06-17.

References

Affected products (39)

cpe:2.3:o:sma:sunny_boy_3600_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_boy_5000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_tripower_core1_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_tripower_15000tl_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_tripower_20000tl_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_tripower_25000tl_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_tripower_5000tl_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_tripower_12000tl_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_tripower_60_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_boy_3000tl_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_boy_3600tl_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_boy_4000tl_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_boy_5000tl_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_boy_1.5_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_boy_2.5_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_boy_3.0_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_boy_3.6_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_boy_4.0_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_boy_5.0_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_2200_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_1000cp_xt_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_800cp_xt_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_850cp_xt_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_900cp_xt_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_500cp_xt_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_630cp_xt_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_720cp_xt_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_760cp_xt_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_storage_500_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_storage_630_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_storage_720_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_storage_760_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_storage_800_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_storage_850_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_storage_900_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_storage_1000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_storage_2200_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_central_storage_2500-ev_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:sma:sunny_boy_storage_2.5_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Sma Sunny Boy 3600 Firmware

CVE-2017-9861 — Critical (CVSS 9.8): An issue was discovered in SMA Solar Technology products. The SIP implementation does not properly use authentication…
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CVE-2017-9859 — Critical (CVSS 9.8): An issue was discovered in SMA Solar Technology products. The inverters make use of a weak hashing algorithm to encrypt…
CVE-2017-9855 — Critical (CVSS 9.8): An issue was discovered in SMA Solar Technology products. A secondary authentication system is available for Installers…
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