What is the CVSS score of CVE-2020-6879?

CVE-2020-6879 has a CVSS 3.1 base score of 3.5 (Low). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N. EPSS exploitation probability: 0.7%.

Zxhn Z500 Firmware CVE-2020-6879

LOW

Improper Input Validation (CWE-20)

2020-11-19 psirt@zte.com.cn

Authentication Bypass Zte Zxhn Z500 Firmware Zxhn F670L Firmware

3.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

3.5 LOW

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Lifecycle Timeline

CVE Published

Nov 19, 2020 - 17:15 nvd

LOW 3.5

DescriptionNVD

Some ZTE devices have input verification vulnerabilities. The devices support configuring a static prefix through the web management page. The restriction of the front-end code can be bypassed by constructing a POST request message and sending the request to the creation of a static routing rule configuration interface. The WEB service backend fails to effectively verify the abnormal input. As a result, the attacker can successfully use the vulnerability to tamper parameter values. This affects: ZXHN Z500 V1.0.0.2B1.1000 and ZXHN F670L V1.1.10P1N2E. This is fixed in ZXHN Z500 V1.0.1.1B1.1000 and ZXHN F670L V1.1.10P2N2.

AnalysisAI

Some ZTE devices have input verification vulnerabilities. Rated low severity (CVSS 3.5), this vulnerability is low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-20. Some ZTE devices have input verification vulnerabilities. The devices support configuring a static prefix through the web management page. The restriction of the front-end code can be bypassed by constructing a POST request message and sending the request to the creation of a static routing rule configuration interface. The WEB service backend fails to effectively verify the abnormal input. As a result, the attacker can successfully use the vulnerability to tamper parameter values. This affects: ZXHN Z500 V1.0.0.2B1.1000 and ZXHN F670L V1.1.10P1N2E. This is fixed in ZXHN Z500 V1.0.1.1B1.1000 and ZXHN F670L V1.1.10P2N2. Affected products include: Zte Zxhn Z500 Firmware, Zte Zxhn F670L Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.