What is the CVSS score of CVE-2020-5635?

CVE-2020-5635 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.0%.

Aterm Sa3500G Firmware CVE-2020-5635

HIGH

OS Command Injection (CWE-78)

2020-12-14 vultures@jpcert.or.jp

Command Injection Aterm Sa3500G Firmware

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

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

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Dec 14, 2020 - 03:15 nvd

HIGH 8.8

DescriptionNVD

Aterm SA3500G firmware versions prior to Ver. 3.5.9 allows an attacker on the adjacent network to send a specially crafted request to a specific URL, which may result in an arbitrary command execution.

AnalysisAI

Aterm SA3500G firmware versions prior to Ver. Rated high severity (CVSS 8.8), this vulnerability is no authentication required, low attack complexity. 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. Aterm SA3500G firmware versions prior to Ver. 3.5.9 allows an attacker on the adjacent network to send a specially crafted request to a specific URL, which may result in an arbitrary command execution. Affected products include: Necplatforms Aterm Sa3500G 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.