CVE-2017-6720

MEDIUM
6.5
CVSS Score
Published: September 21, 2017 at 05:00 AM UTC
Updated: June 17, 2026 at 01:22 AM UTC
171 products affected across 1 vendorSg300-10pp FirmwareSg300-28mp FirmwareSf300-48pp Firmware

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Severity
MEDIUM6.5
Exploit prediction
EPSS 1%

Description

A vulnerability in the Secure Shell (SSH) subsystem of Cisco Small Business Managed Switches software could allow an authenticated, remote attacker to cause a reload of the affected switch, resulting in a denial of service (DoS) condition. The vulnerability is due to improper processing of SSH connections. An attacker could exploit this vulnerability by logging in to an affected switch via SSH and sending a malicious SSH message. This vulnerability affects the following Cisco products when SSH is enabled: Small Business 300 Series Managed Switches, Small Business 500 Series Stackable Managed Switches, 350 Series Managed Switches, 350X Series Stackable Managed Switches, 550X Series Stackable Managed Switches, ESW2 Series Advanced Switches. Cisco Bug IDs: CSCvb48377.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.4.8.06
Affected range stops below 1.4.8.06, so it looks safe — our inference, not a vendor statement
cisco-esw2-350g-52 (same device)
v < 1.4.8.06
Affected range stops below 1.4.8.06, so it looks safe — our inference, not a vendor statement
cisco-esw2-350g-52dc (same device)
v < 1.4.8.06
Affected range stops below 1.4.8.06, so it looks safe — our inference, not a vendor statement
cisco-esw2-550x-48 (same device)
v < 1.4.8.06
Affected range stops below 1.4.8.06, so it looks safe — our inference, not a vendor statement
cisco-esw2-550x-48dc (same device)
v < 1.4.8.06
Affected range stops below 1.4.8.06, so it looks safe — our inference, not a vendor statement
cisco-sf300-08 (same device)
v < 1.4.8.06
Affected range stops below 1.4.8.06, so it looks safe — our inference, not a vendor statement
cisco-sf300-24 (same device)
v < 1.4.8.06
Affected range stops below 1.4.8.06, so it looks safe — our inference, not a vendor statement
cisco-sf300-24mp (same device)
v < 1.4.8.06
Affected range stops below 1.4.8.06, so it looks safe — our inference, not a vendor statement
cisco-sf300-24p (same device)
v < 1.4.8.06
Affected range stops below 1.4.8.06, so it looks safe — our inference, not a vendor statement
cisco-sf300-24pp (same device)
v < 1.4.8.06
Affected range stops below 1.4.8.06, so it looks safe — our inference, not a vendor statement
cisco-sf300-48 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-119

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