CVE-2017-6720

mediumpriority · track · 26EPSS 0.014 · 72 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.40% (72nd) EPSS

CVSS 6.8 · medium

Is it mine?

86 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

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.

cvss

Technical severity, 0–10. One row per scoring source.

6.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.06.8mediumAV:N/AC:L/Au:S/C:N/I:N/A:Cprimary · NVD / NIST USexploitability 8 · impact 6.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimary

affected products (86)

Products and version ranges known to be affected.

n/a Cisco Small Business Managed Switches≤ Cisco Small Business Managed Switchesenisa_euvdEU
cisco esw2-350g-52 firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:esw2-350g-52_firmware:*:*:*:*:*:*:*:*
cisco esw2-350g-52dc firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:esw2-350g-52dc_firmware:*:*:*:*:*:*:*:*
cisco esw2-550x-48 firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:esw2-550x-48_firmware:*:*:*:*:*:*:*:*
cisco esw2-550x-48dc firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:esw2-550x-48dc_firmware:*:*:*:*:*:*:*:*
cisco sf300-08 firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:sf300-08_firmware:*:*:*:*:*:*:*:*
cisco sf300-24 firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:sf300-24_firmware:*:*:*:*:*:*:*:*
cisco sf300-24mp firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:sf300-24mp_firmware:*:*:*:*:*:*:*:*
cisco sf300-24p firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:sf300-24p_firmware:*:*:*:*:*:*:*:*
cisco sf300-24pp firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:sf300-24pp_firmware:*:*:*:*:*:*:*:*
cisco sf300-48 firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:sf300-48_firmware:*:*:*:*:*:*:*:*
cisco sf300-48p firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:sf300-48p_firmware:*:*:*:*:*:*:*:*
cisco sf300-48pp firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:sf300-48pp_firmware:*:*:*:*:*:*:*:*
cisco sf302-08 firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:sf302-08_firmware:*:*:*:*:*:*:*:*
cisco sf302-08mp firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:sf302-08mp_firmware:*:*:*:*:*:*:*:*
cisco sf302-08mpp firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:sf302-08mpp_firmware:*:*:*:*:*:*:*:*
cisco sf302-08p firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:sf302-08p_firmware:*:*:*:*:*:*:*:*
cisco sf302-08pp firmware< 1.4.8.06nvdUScpe:2.3:o:cisco:sf302-08pp_firmware:*:*:*:*:*:*:*:*
cisco sf350-48 firmware< 2.3.0.130nvdUScpe:2.3:o:cisco:sf350-48_firmware:*:*:*:*:*:*:*:*
cisco sf350-48mp firmware< 2.3.0.130nvdUScpe:2.3:o:cisco:sf350-48mp_firmware:*:*:*:*:*:*:*:*

showing 20 of 86

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2017-09-21modified 2026-06-17

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+21039 more

references (6)

External citations — patches, advisories, analysis.

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