CVE-2017-5544

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-01-23 · updated 2026-06-17
Weakness: CWE-400

Description

An issue was discovered on FiberHome Fengine S5800 switches V210R240. An unauthorized attacker can access the device's SSH service, using a password cracking tool to establish SSH connections quickly. This will trigger an increase in the SSH login timeout (each of the login attempts will occupy a connection slot for a longer time). Once this occurs, legitimate login attempts via SSH/telnet will be refused, resulting in a denial of service; you must restart the device.

Affected products

FiberHome Fengine S5800 Firmware: v210r240

References

http://www.nfcwar.com
http://www.securityfocus.com/bid/95708
http://www.nfcwar.com
http://www.securityfocus.com/bid/95708

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