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Fencer Vulns
critical 9.1

CVE-2019-1912 in the critical feed json

Cisco Small Business 220 Series Smart Switches Authentication Bypass Vulnerability

published 2019-08-07 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-10469

cvss
9.1
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
17.0%
EPSS 17.0% chance of exploitation in 30 days, percentile 97%
public exploits
1
Exploit-DB

Summary

A vulnerability in the web management interface of Cisco Small Business 220 Series Smart Switches could allow an unauthenticated, remote attacker to upload arbitrary files. The vulnerability is due to incomplete authorization checks in the web management interface. An attacker could exploit this vulnerability by sending a malicious request to certain parts of the web management interface. Depending on the configuration of the affected switch, the malicious request must be sent via HTTP or HTTPS. A successful exploit could allow the attacker to modify the configuration of an affected device or to inject a reverse shell. This vulnerability affects Cisco Small Business 220 Series Smart Switches running firmware versions prior to 1.1.4.4 with the web management interface enabled. The web management interface is enabled via both HTTP and HTTPS by default.

Patch / fix

  • Cisco Cisco Small Business 220 Series Smart Plus Switches 1.1.4.4

Timeline

  1. Published
  2. First public exploit (EDB-47442)

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
23 mo ago

Exploit prediction

17.04% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-47442 Cisco Small Business 220 Series - Multiple Vulnerabilities remote, 2019-09-30

CVSS scores

assigned by version score vector
CNA 3.0 9.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
NVD 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:N/I:P/A:P

Affected products

  • Cisco Cisco Small Business 220 Series Smart Plus Switches

Classification

Weakness

References

Sources

Fencer Vulns 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.