CVE-2021-34757

Cisco Business 220 Series Smart Switches Static Key and Password Vulnerabilities

MEDIUM
5.5
CVSS Score
Published: October 6, 2021 at 07:46 PM UTC
Updated: June 17, 2026 at 03:56 AM UTC
33 products affected across 1 vendorBusiness 220-48t 4X FirmwareBusiness 220-16p 2G FirmwareBusiness 220-48t 4G Firmware

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.2.0.6
cisco-business-220-16p-2g (same device)
v ≤ 1.2.0.6
cisco-business-220-16t-2g (same device)
v ≤ 1.2.0.6
cisco-business-220-24fp-4g (same device)
v ≤ 1.2.0.6
cisco-business-220-24fp-4x (same device)
v ≤ 1.2.0.6
cisco-business-220-24p-4g (same device)
v ≤ 1.2.0.6
cisco-business-220-24p-4x (same device)
v ≤ 1.2.0.6
cisco-business-220-24t-4g (same device)
v ≤ 1.2.0.6
cisco-business-220-24t-4x (same device)
v ≤ 1.2.0.6
cisco-business-220-48fp-4x (same device)
v ≤ 1.2.0.6
cisco-business-220-48p-4g (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
PHYSICAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-540CWE-798

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