What is the CVSS score of CVE-2018-20438?

CVE-2018-20438 has a CVSS 3.0 base score of 9.8 (Critical). CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.4%.

Is there a public PoC exploit available for CVE-2018-20438?

Yes, a public proof-of-concept exploit is available for CVE-2018-20438. Prioritise patching immediately. EPSS: 1.4%.

Tc7110 Ar Firmware CVE-2018-20438

CRITICAL

Insufficiently Protected Credentials (CWE-522)

2018-12-25 cve@mitre.org

Information Disclosure Tc7110 Ar Firmware

9.8

CVSS 3.0 · 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:3.0/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

Dec 25, 2018 - 15:29 nvd

CRITICAL 9.8

DescriptionNVD

AnalysisAI

Technicolor TC7110.AR STD3.38.03 devices allow remote attackers to discover Wi-Fi credentials via iso.3.6.1.4.1.2863.205.10.1.30.4.1.14.1.3.32 and iso.3.6.1.4.1.2863.205.10.1.30.4.2.4.1.2.32 SNMP. 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 Insufficiently Protected Credentials (CWE-522), which allows attackers to obtain user credentials due to weak protection mechanisms. Technicolor TC7110.AR STD3.38.03 devices allow remote attackers to discover Wi-Fi credentials via iso.3.6.1.4.1.2863.205.10.1.30.4.1.14.1.3.32 and iso.3.6.1.4.1.2863.205.10.1.30.4.2.4.1.2.32 SNMP requests. Affected products include: Technicolor Tc7110.Ar Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Hash passwords with strong algorithms (bcrypt, argon2), encrypt credentials in transit and at rest, never log credentials.