CVE-2017-9853

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

Published: 2017-08-05 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-9853 is rated Moderate Risk (57.3/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.33%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2017-9853

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.64% 0.33% -0.31%
2 2025-03-29 0.32% 0.64% +0.32%
3 2023-03-07 — 0.32% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-9853

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2017-9853

Affected software / configurations for CVE-2017-9853

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

References for CVE-2017-9853

cvelogic Threat Intelligence