CVE-2021-1542 json
Cisco Small Business 220 Series Smart Switches Vulnerabilities
published 2021-06-16 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-7009
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 72%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- cisco sf220-24_firmware 1.2.0.6
- cisco sf220-24p_firmware 1.2.0.6
- cisco sf220-48_firmware 1.2.0.6
- cisco sf220-48p_firmware 1.2.0.6
- cisco sg220-26_firmware 1.2.0.6
- cisco sg220-26p_firmware 1.2.0.6
- cisco sg220-28mp_firmware 1.2.0.6
- cisco sg220-50_firmware 1.2.0.6
- cisco sg220-50p_firmware 1.2.0.6
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
1.39% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Affected products
- Cisco Cisco Small Business 220 Series Smart Plus Switches
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
Sources
- CVE List CVE-2021-1542
- NVD CVE-2021-1542
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