CVE-2017-9861: SMA Sunny Boy 1.5 Firmware

Critical severity, CVSS 9.8. EPSS: 1.4% chance of exploitation in the next 30 days.

An issue was discovered in SMA Solar Technology products. The SIP implementation does not properly use authentication with encryption: it is vulnerable to replay attacks, packet injection attacks, and man in the middle attacks. An attacker is able to successfully use SIP to communicate with the device from anywhere within the LAN. An attacker may use this to crash the device, stop it from communicating with the SMA servers, exploit known SIP vulnerabilities, or find sensitive information from the SIP communications. Furthermore, because the SIP communication channel is unencrypted, an attacker capable of understanding the protocol can eavesdrop on communications. For example, passwords can be extracted. NOTE: the vendor's position is that authentication with encryption is not required on an isolated subnetwork. Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower TL-10 and TL-30 could potentially be affected

Affected products

SMA Sunny Boy 1.5 Firmware: affected versions not specified
SMA Sunny Boy 2.5 Firmware: affected versions not specified
SMA Sunny Boy 3.0 Firmware: affected versions not specified
SMA Sunny Boy 3.6 Firmware: affected versions not specified
SMA Sunny Boy 3000tl Firmware: affected versions not specified
SMA Sunny Boy 3600 Firmware: affected versions not specified
SMA Sunny Boy 3600tl Firmware: affected versions not specified
SMA Sunny Boy 4.0 Firmware: affected versions not specified
SMA Sunny Boy 4000tl Firmware: affected versions not specified
SMA Sunny Boy 5.0 Firmware: affected versions not specified
SMA Sunny Boy 5000 Firmware: affected versions not specified
SMA Sunny Boy 5000tl Firmware: affected versions not specified
SMA Sunny Boy Storage 2.5 Firmware: affected versions not specified
SMA Sunny Central 1000cp Xt Firmware: affected versions not specified
SMA Sunny Central 2200 Firmware: affected versions not specified
SMA Sunny Central 500cp Xt Firmware: affected versions not specified
SMA Sunny Central 630cp Xt Firmware: affected versions not specified
SMA Sunny Central 720cp Xt Firmware: affected versions not specified
SMA Sunny Central 760cp Xt Firmware: affected versions not specified
SMA Sunny Central 800cp Xt Firmware: affected versions not specified
SMA Sunny Central 850cp Xt Firmware: affected versions not specified
SMA Sunny Central 900cp Xt Firmware: affected versions not specified
SMA Sunny Central Storage 1000 Firmware: affected versions not specified
SMA Sunny Central Storage 2200 Firmware: affected versions not specified
SMA Sunny Central Storage 2500-Ev Firmware: affected versions not specified
and 14 more

Published 2017-08-05. Last modified 2026-06-17.