What is the CVSS score of CVE-2020-21883?

CVE-2020-21883 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 5.9%.

Is there a public PoC exploit available for CVE-2020-21883?

Yes, a public proof-of-concept exploit is available for CVE-2020-21883. Prioritise patching immediately. EPSS: 5.9%.

Unibox U50 Firmware CVE-2020-21883

HIGH

OS Command Injection (CWE-78)

2021-04-09 cve@mitre.org

Command Injection Unibox U50 Firmware Unibox U500 Firmware Unibox U1000 Firmware Unibox U2500 Firmware Unibox U5000 Firmware

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Apr 09, 2021 - 13:15 nvd

HIGH 8.8

DescriptionNVD

Unibox U-50 2.4 and UniBox Enterprise Series 2.4 and UniBox Campus Series 2.4 contain a OS command injection vulnerability in /tools/ping, which can leads to complete device takeover.

AnalysisAI

Unibox U-50 2.4 and UniBox Enterprise Series 2.4 and UniBox Campus Series 2.4 contain a OS command injection vulnerability in /tools/ping, which can leads to complete device takeover. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as OS Command Injection (CWE-78), which allows attackers to execute arbitrary operating system commands on the host. Unibox U-50 2.4 and UniBox Enterprise Series 2.4 and UniBox Campus Series 2.4 contain a OS command injection vulnerability in /tools/ping, which can leads to complete device takeover. Affected products include: Indionetworks Unibox U50 Firmware, Indionetworks Unibox U500 Firmware, Indionetworks Unibox U1000 Firmware, Indionetworks Unibox U2500 Firmware, Indionetworks Unibox U5000 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid passing user input to shell commands. Use language-specific APIs instead of shell execution. Apply strict input validation with allowlists.