What is the CVSS score of CVE-2018-5717?

CVE-2018-5717 has a CVSS 3.0 base score of 7.5 (High). CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 1.2%.

S2 Dispenser Controller Firmware CVE-2018-5717

HIGH

Out-of-bounds Write (CWE-787)

2018-03-20 cve@mitre.org

Memory Corruption Buffer Overflow S2 Dispenser Controller Firmware

7.5

CVSS 3.0 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

CVE Published

Mar 20, 2018 - 14:29 nvd

HIGH 7.5

DescriptionNVD

AnalysisAI

Memory write mechanism in NCR S2 Dispenser controller before firmware version 0x0108 allows an unauthenticated user to upgrade or downgrade the firmware of the device, including to older versions. Rated high severity (CVSS 7.5), 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 Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. Memory write mechanism in NCR S2 Dispenser controller before firmware version 0x0108 allows an unauthenticated user to upgrade or downgrade the firmware of the device, including to older versions with known vulnerabilities. Affected products include: Ncr S2 Dispenser Controller Firmware. Version information: version 0.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).