What is the CVSS score of CVE-2021-25848?

CVE-2021-25848 has a CVSS 3.1 base score of 9.1 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H. EPSS exploitation probability: 1.2%.

Vport 06Ec 2V26M Firmware CVE-2021-25848

CRITICAL

Out-of-bounds Read (CWE-125)

2021-05-10 cve@mitre.org

Buffer Overflow Information Disclosure Vport 06Ec 2V26M Firmware Vport 06Ec 2V36M T Firmware Vport 06Ec 2V36M Ct Firmware Vport 06Ec 2V36M Ct T Firmware Vport 06Ec 2V42M Firmware Vport 06Ec 2V42M T Firmware Vport 06Ec 2V42M Ct Firmware Vport 06Ec 2V42M Ct T Firmware Vport 06Ec 2V60M Firmware Vport 06Ec 2V60M T Firmware Vport 06Ec 2V60M Ct Firmware Vport 06Ec 2V60M Ct T Firmware Vport 06Ec 2V80M Firmware Vport 06Ec 2V80M T Firmware Vport 06Ec 2V80M Ct Firmware Vport 06Ec 2V80M Ct T Firmware

9.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.1 CRITICAL

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

May 10, 2021 - 11:15 nvd

CRITICAL 9.1

DescriptionNVD

Improper validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows information disclosure to attackers due to using fixed loop counter variable without checking the actual available length via a crafted lldp packet.

AnalysisAI

Improper validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows information disclosure to attackers due to using fixed loop. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. Improper validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows information disclosure to attackers due to using fixed loop counter variable without checking the actual available length via a crafted lldp packet. Affected products include: Moxa Vport 06Ec-2V26M Firmware, Moxa Vport 06Ec-2V36M-T Firmware, Moxa Vport 06Ec-2V36M-Ct Firmware, Moxa Vport 06Ec-2V36M-Ct-T Firmware, Moxa Vport 06Ec-2V42M Firmware. Version information: version 1.1.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.