CVE-2021-34757
Cisco Business 220 Series Smart Switches Static Key and Password Vulnerabilities
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Cisco Business 220 Series Smart Switches Static Key and Password Vulnerabilities
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.
- Record
CVE-2021-34757- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-540
- Updated
- 2026-11-02
EUVDEUVD-2021-21407
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.
- Record
EUVD-2021-21407- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8q5v-c5jp-qp9p
Multiple vulnerabilities in Cisco Business 220 Series Smart Switches firmware could allow an...
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.
- Record
GHSA-8q5v-c5jp-qp9p- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-200, CWE-798
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2021-34757- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N - CVSS 2.0
- 3.6 Low
AV:L/AC:L/Au:N/C:P/I:P/A:N - Weakness
- CWE-540, CWE-798
- Updated
- 2026-11-02
Affected products
- cisco business 220-16p-2g firmware
- cisco business 220-16t-2g firmware
- cisco business 220-24fp-4g firmware
- cisco business 220-24fp-4x firmware
- cisco business 220-24p-4g firmware
- cisco business 220-24p-4x firmware
- cisco business 220-24t-4g firmware
- cisco business 220-24t-4x firmware
- cisco business 220-48fp-4x firmware
- cisco business 220-48p-4g firmware
- cisco business 220-48p-4x firmware
- cisco business 220-48t-4g firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-34757 is a medium vulnerability (CVSS 4.9) in Cisco Business 220-16p-2g Firmware, published October 6, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.62%, the 50th percentile. No source names a fixed version.