CVE-2021-1571: cisco cisco small business 220 series smart plus switches Improper Authentication
Vulnerability summary
CVE-2021-1571 is a high (CVSS 7.2) Improper Authentication vulnerability in cisco cisco small business 220 series smart plus switches. EPSS estimates a 9.72% chance of exploitation in the next 30 days, higher than 95.5% of scored vulnerabilities.
Timeline
- 16-06-2021PublishedVulnerability first disclosed.
- 07-11-2024Last modifiedVulnerability information updated.
Description
Multiple vulnerabilities in the web-based management interface of Cisco Small Business 220 Series Smart Switches could allow an attacker to do the following: Hijack a user session Execute arbitrary commands as a root user on the underlying operating system Conduct a cross-site scripting (XSS) attack Conduct an HTML injection attack For more information about these vulnerabilities, see the Details section of this advisory.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NDiffers
EPSS trend
Probability
9.72%
Chance of exploitation in the next 30 days
Percentile
96%
Versus all other CVEs
30-day change
0.00 pp
From 9.72% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-287Improper AuthenticationWhen an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Affected systems
Cisco10 products
- cisco small business 220 series smart plus switchesn/a
- sf220-24_firmware< 1.2.0.6
- sf220-24p_firmware< 1.2.0.6
- sf220-48_firmware< 1.2.0.6
- sf220-48p_firmware< 1.2.0.6
1 vendor · 10 products
References
1 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ciscosb-multivulns-Wwyb7s5EVendor AdvisoryX Refsource CISCOPatch