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Fencer Intel
medium 4.7

CVE-2019-1943 json

Cisco Small Business Series Switches Open Redirect Vulnerability

published 7y ago modified 4mo ago also EUVD-2019-10500

cvss
4.7
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
9.7%
EPSS 9.7% chance of exploitation in 30 days, percentile 95%
public exploits
1
Exploit-DB, plus a Nuclei check

Summary

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.

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Timeline

  1. First public exploit (EDB-47118)
  2. Published

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last yr.

Exploit prediction

9.69% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-47118 CISCO Small Business 200 / 300 / 500 Switches - Multiple Vulnerabilities webapps, 2019-07-15
  • Nuclei template Cisco Small Business 200,300 and 500 Series Switches - Open Redirect nuclei detection template

CVSS scores

assigned by version score vector
CNA 3.0 4.7 CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N

Affected products

  • Cisco Cisco Small Business 300 Series Managed Switches

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.