What is the CVSS score of CVE-2021-39474?

CVE-2021-39474 has a CVSS 3.1 base score of 7.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.9%.

Is there a public PoC exploit available for CVE-2021-39474?

Yes, a public proof-of-concept exploit is available for CVE-2021-39474. Prioritise patching immediately. EPSS: 1.9%.

Ubc1319 Firmware CVE-2021-39474

HIGH

OS Command Injection (CWE-78)

2021-11-10 cve@mitre.org

Command Injection Ubc1319 Firmware

7.2

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.2 HIGH

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Nov 10, 2021 - 12:15 nvd

HIGH 7.2

DescriptionNVD

Vulnerability in the product Docsis 3.0 UBC1319BA00 Router supported affected version 1319010201r009. The vulnerability allows an attacker with privileges and network access through the ping.cmd component to execute commands on the device.

AnalysisAI

Vulnerability in the product Docsis 3.0 UBC1319BA00 Router supported affected version 1319010201r009. Rated high severity (CVSS 7.2), 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. Vulnerability in the product Docsis 3.0 UBC1319BA00 Router supported affected version 1319010201r009. The vulnerability allows an attacker with privileges and network access through the ping.cmd component to execute commands on the device. Affected products include: Ubeeinteractive Ubc1319 Firmware. Version information: version 1319010201.

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.