What is the CVSS score of CVE-2017-8840?

CVE-2017-8840 has a CVSS 3.0 base score of 5.3 (Medium). CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 3.8%.

Is there a public PoC exploit available for CVE-2017-8840?

Yes, a public proof-of-concept exploit is available for CVE-2017-8840. Prioritise patching immediately. EPSS: 3.8%.

Is there a patch available for CVE-2017-8840?

Yes, a patch is available for CVE-2017-8840. Update the affected software to the latest version immediately.

B305Hw2 Firmware CVE-2017-8840

MEDIUM

Information Exposure (CWE-200)

2017-06-05 cve@mitre.org

Information Disclosure B305Hw2 Firmware 380Hw6 Firmware 580Hw2 Firmware 710Hw3 Firmware 1350Hw2 Firmware 2500 Firmware

5.3

CVSS 3.0 · NVD

Severity by source

NVD PRIMARY

5.3 MEDIUM

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

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:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

CVE Published

Jun 05, 2017 - 14:29 cve.org

MEDIUM 5.3

DescriptionCVE.org

Debug information disclosure exists on Peplink Balance 305, 380, 580, 710, 1350, and 2500 devices with firmware before fw-b305hw2_380hw6_580hw2_710hw3_1350hw2_2500-7.0.1-build2093. A direct request to cgi-bin/HASync/hasync.cgi?debug=1 shows Master LAN Address, Serial Number, HA Group ID, Virtual IP, and Submitted syncid.

AnalysisAI

Debug information disclosure exists on Peplink Balance 305, 380, 580, 710, 1350, and 2500 devices with firmware before fw-b305hw2_380hw6_580hw2_710hw3_1350hw2_2500-7.0.1-build2093. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Exposure of Sensitive Information (CWE-200), which allows attackers to access sensitive data that should not be disclosed. Debug information disclosure exists on Peplink Balance 305, 380, 580, 710, 1350, and 2500 devices with firmware before fw-b305hw2_380hw6_580hw2_710hw3_1350hw2_2500-7.0.1-build2093. A direct request to cgi-bin/HASync/hasync.cgi?debug=1 shows Master LAN Address, Serial Number, HA Group ID, Virtual IP, and Submitted syncid. Affected products include: Peplink B305Hw2 Firmware, Peplink 380Hw6 Firmware, Peplink 580Hw2 Firmware, Peplink 710Hw3 Firmware, Peplink 1350Hw2 Firmware.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Minimize information in error messages, implement proper access controls, encrypt sensitive data at rest and in transit.