What is the CVSS score of CVE-2021-31726?

CVE-2021-31726 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.8%.

C315 Firmware CVE-2021-31726

CRITICAL

Command Injection (CWE-77)

2021-04-25 cve@mitre.org

Command Injection C315 Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Apr 25, 2021 - 19:15 nvd

CRITICAL 9.8

DescriptionNVD

Akuvox C315 115.116.2613 allows remote command Injection via the cfgd_server service. The attack vector is sending a payload to port 189 (default root 0.0.0.0).

AnalysisAI

Akuvox C315 115.116.2613 allows remote command Injection via the cfgd_server service. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Command Injection (CWE-77), which allows attackers to inject arbitrary commands into system command execution. Akuvox C315 115.116.2613 allows remote command Injection via the cfgd_server service. The attack vector is sending a payload to port 189 (default root 0.0.0.0). Affected products include: Akuvox C315 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use parameterized APIs, avoid shell execution, validate input with strict allowlists.