What is the CVSS score of CVE-2023-31856?

CVE-2023-31856 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: 2.9%.

Is there a public PoC exploit available for CVE-2023-31856?

Yes, a public proof-of-concept exploit is available for CVE-2023-31856. Prioritise patching immediately. EPSS: 2.9%.

Cp300 Firmware CVE-2023-31856

CRITICAL

Command Injection (CWE-77)

2023-05-16 cve@mitre.org

Command Injection Cp300 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

May 16, 2023 - 15:15 nvd

CRITICAL 9.8

DescriptionNVD

AnalysisAI

A command injection vulnerability in the hostTime parameter in the function NTPSyncWithHostof TOTOLINK CP300+ V5.2cu.7594_B20200910 allows attackers to execute arbitrary commands via a crafted http. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and 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. A command injection vulnerability in the hostTime parameter in the function NTPSyncWithHostof TOTOLINK CP300+ V5.2cu.7594_B20200910 allows attackers to execute arbitrary commands via a crafted http packet. Affected products include: Totolink Cp300\+ 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.