CVE-2019-1943

mediumpriority · track · 37EPSS 0.097 · 95 %ileexploit · PoCEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

9.69% (95th) EPSS

CVSS 5.8 · medium

Is it mine?

62 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-28

A vulnerability in the web interface of Cisco Small Business 200, 300, and 500 Series Switches software could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. The vulnerability is due to improper input validation of the parameters of an HTTP request. An attacker could exploit this vulnerability by intercepting a user's HTTP request and modifying it into a request that causes the web interface to redirect the user to a specific malicious URL. This type of vulnerability is known as an open redirect attack and is used in phishing attacks that get users to unknowingly visit malicious sites.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco Small Business 300 Series Managed Switchescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

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

6.1

010

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

v2.05.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 4.9

v3.06.1mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.7

v3.04.7mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · ENISA EU

v3.04.7mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · Cisco PSIRT US

v3.04.7mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · psirt@cisco.com USexploitability 1.6 · impact 2.7

v3.06mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Fsecondary · CVSS-BT (t0sche)

v3.14.7mediumAV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · FSTEC (BDU) RU

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-601USprimaryCWE-601US

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-47118CISCO Small Business 200 / 300 / 500 Switches - Multiple VulnerabilitiesPoC · exploit_db

affected products (62)

Products and version ranges known to be affected.

Cisco Cisco Small Business 300 Series Managed Switchesall versionscisco_csafUS
Cisco Cisco Small Business 300 Series Managed Switches≤ 1.3.7.18enisa_euvdEU
Cisco Systems Inc. Cisco Small Business 200 Series Smart Switches≤ 1.3.7.18fstec_bduRU
Cisco Systems Inc. Cisco Small Business 300 Series Managed≤ 1.3.7.18fstec_bduRU
Cisco Systems Inc. Cisco Small Business 500 Series Stackable Managed≤ 1.3.7.18fstec_bduRU
cisco sf200-24 firmwareall versionsnvdUScpe:2.3:o:cisco:sf200-24_firmware:*:*:*:*:*:*:*:*
cisco sf200-24fp firmwareall versionsnvdUScpe:2.3:o:cisco:sf200-24fp_firmware:*:*:*:*:*:*:*:*
cisco sf200-24p firmwareall versionsnvdUScpe:2.3:o:cisco:sf200-24p_firmware:*:*:*:*:*:*:*:*
cisco sf200-48 firmwareall versionsnvdUScpe:2.3:o:cisco:sf200-48_firmware:*:*:*:*:*:*:*:*
cisco sf200-48p firmwareall versionsnvdUScpe:2.3:o:cisco:sf200-48p_firmware:*:*:*:*:*:*:*:*
cisco sf300-08 firmware= 1.3.7.18nvdUScpe:2.3:o:cisco:sf300-08_firmware:*:*:*:*:*:*:*:*
cisco sf300-24 firmware= 1.3.7.18nvdUScpe:2.3:o:cisco:sf300-24_firmware:*:*:*:*:*:*:*:*
cisco sf300-24mp firmware= 1.3.7.18nvdUScpe:2.3:o:cisco:sf300-24mp_firmware:*:*:*:*:*:*:*:*
cisco sf300-24p firmware= 1.3.7.18nvdUScpe:2.3:o:cisco:sf300-24p_firmware:*:*:*:*:*:*:*:*
cisco sf300-24pp firmware= 1.3.7.18nvdUScpe:2.3:o:cisco:sf300-24pp_firmware:*:*:*:*:*:*:*:*
cisco sf300-48 firmware= 1.3.7.18nvdUScpe:2.3:o:cisco:sf300-48_firmware:*:*:*:*:*:*:*:*
cisco sf300-48p firmware= 1.3.7.18nvdUScpe:2.3:o:cisco:sf300-48p_firmware:*:*:*:*:*:*:*:*
cisco sf300-48pp firmware= 1.3.7.18nvdUScpe:2.3:o:cisco:sf300-48pp_firmware:*:*:*:*:*:*:*:*
cisco sf302-08 firmware= 1.3.7.18nvdUScpe:2.3:o:cisco:sf302-08_firmware:*:*:*:*:*:*:*:*
cisco sf302-08mp firmware= 1.3.7.18nvdUScpe:2.3:o:cisco:sf302-08mp_firmware:*:*:*:*:*:*:*:*

showing 20 of 62

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-20190717-sbss-redirectCisco Small Business Series Switches Open Redirect Vulnerability2019-07-17csaf · cisco_csafUS
A vulnerability in the web interface of Cisco Small Business 200, 300, and 500 Series Switches software could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. The vulnerability is due to improper input validation of the parameters of an HTTP request. An attacker could exploit this vulnerability by intercepting a user's HTTP request and modifying it into a request that causes the web interface to redirect the user to a specific malicious URL. This type of vulnerability is known as an open redirect attack and is used in phishing attacks that get users to unknowingly visit malicious sites. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190717-sbss-redirect ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190717-sbss-redirect"]

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisco_csaf nvd NVD CVE.org MITRE

published 2019-07-17modified 2026-06-17

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references (12)

External citations — patches, advisories, analysis.

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