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Vulnerability record · CVE-2018-3846 · published 16 April 2018

CVE-2018-3846: Nasa cfitsio out-of-bounds write vulnerability

NNasa · Cfitsio

In the ffgphd and ffgtkn functions in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.

8.8 CVSS 3.1 High EPSS 3.0% · top 13.1% CWE-787 · Out-of-bounds write
8.8CVSS 3.1 base score, v2 6.8
3.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

In the ffgphd and ffgtkn functions in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K46I2MFPCEOGC5LLDXZSWPB
https://security.gentoo.org/glsa/202101-24 Third Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0529 ExploitThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K46I2MFPCEOGC5LLDXZSWPB
https://security.gentoo.org/glsa/202101-24 Third Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0529 ExploitThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-3846), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.