Memory write mechanism in NCR S2 Dispenser controller before firmware version 0x0108 allows an unauthenticated user to upgrade or downgrade…

published 2018-03-20 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-17486

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

ncr s2_dispenser_controller_firmware 0x0108

Exploit prediction

1.22% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD	2.0	7.8	AV:N/AC:L/Au:N/C:N/I:C/A:N

Classification

Weakness

CWE-787 Out-of-bounds Write

References

ncr.com /sites/default/files/ncr_security_alert_-_2018-04_v3.pdf
broken-link

Sources

CVE List CVE-2018-5717
NVD CVE-2018-5717

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary