HIGH

CVE-2018-17942

CVSS v3

8.8

HIGH

EPSS Score

2.5 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

CVE-2018-17942 Red Hat Product Security6 known affected
gnulib: heap-based buffer overflow in convert_to_decimal function in vasnprintf.c
nagios-plugins as a component of Red Hat Storage 3 · nagios-plugins-dummy as a component of Red Hat Storage 3 · nagios-plugins-ide_smart as a component of Red Hat Storage 3

Full record on NVD

Description

The convert_to_decimal function in vasnprintf.c in Gnulib before 2018-09-23 has a heap-based buffer overflow because memory is not allocated for a trailing '\\0' character during %f processing.

Technical details

Published: 2018-10-03

Frequently asked questions

What is CVE-2018-17942?

The convert_to_decimal function in vasnprintf.c in Gnulib before 2018-09-23 has a heap-based buffer overflow because memory is not allocated for a trailing '\\0' character during %f processing.

Is CVE-2018-17942 actively exploited?

Active exploitation of CVE-2018-17942 has not been confirmed. Its EPSS score was 2.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-17942?

CVE-2018-17942 has a CVSS v3 base score of 8.8 (HIGH severity).

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