CVE intelligence and bounded remediation

CVE-2021-34744 — Cisco Business 220-8T-E-2G Firmware security vulnerability

Medium CVSS 4.9

Multiple vulnerabilities in Cisco Business 220 Series Smart Switches firmware could allow an attacker with Administrator privileges to access sensitive login credentials or reconfigure the passwords on the user account. For more information about these vulnerabilities, see the Details section of this advisory.

Severity
Medium
CVSS
4.9 (3.1)
Published
2021-10-06
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-540, CWE-798

Affected products

  • cisco / business_220-8t-e-2g_firmware
  • cisco / business_220-8p-e-2g_firmware
  • cisco / business_220-8fp-e-2g_firmware
  • cisco / business_220-16t-2g_firmware
  • cisco / business_220-16p-2g_firmware
  • cisco / business_220-24t-4g_firmware

Showing 6 representative product identities from 16 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authentication bypass and missing authentication

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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