CVE & CISA-KEV Catalog

CVE-2021-1543

HIGHEPSS 95th pctl
7.2
CVSS v3
NVD

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.

CWE-287Improper AuthenticationCWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available
sf220-24 firmwareNVD
Affected:< 1.2.0.6Fixed in:1.2.0.6CVE-2021-1543derived from NVD
sf220-24p firmwareNVD
Affected:< 1.2.0.6Fixed in:1.2.0.6CVE-2021-1543derived from NVD
sf220-48 firmwareNVD
Affected:< 1.2.0.6Fixed in:1.2.0.6CVE-2021-1543derived from NVD
sf220-48p firmwareNVD
Affected:< 1.2.0.6Fixed in:1.2.0.6CVE-2021-1543derived from NVD
sg220-26 firmwareNVD
Affected:< 1.2.0.6Fixed in:1.2.0.6CVE-2021-1543derived from NVD
sg220-26p firmwareNVD
Affected:< 1.2.0.6Fixed in:1.2.0.6CVE-2021-1543derived from NVD
sg220-28mp firmwareNVD
Affected:< 1.2.0.6Fixed in:1.2.0.6CVE-2021-1543derived from NVD
sg220-50 firmwareNVD
Affected:< 1.2.0.6Fixed in:1.2.0.6CVE-2021-1543derived from NVD
sg220-50p firmwareNVD
Affected:< 1.2.0.6Fixed in:1.2.0.6CVE-2021-1543derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredHigh
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

9.32%probability of exploitation in 30 days
95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

Other CWE-287 (Improper Authentication) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2023-35082Critical9.8100%KEV + RansomFix
CVE-2023-35078Critical9.8100%KEV + RansomFix
CVE-2017-7921Critical9.8100%KEV-
CVE-2024-7593Critical9.8100%KEV-
CVE-2023-46805High8.2100%KEV + Ransom-
CVE-2022-40684Critical9.8100%KEV + RansomFix
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Markdown

[![CVE-2021-1543](https://tridentstack.com/cve/badge/CVE-2021-1543.svg)](https://tridentstack.com/cve/CVE-2021-1543)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-1543"><img src="https://tridentstack.com/cve/badge/CVE-2021-1543.svg" alt="CVE-2021-1543"></a>

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.