CVE-2018-3846

Name: CVE-2018-3846
Creator: NVD / NIST
Published: 2018-04-16T16:29:00.22+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 3.07%

Last modified Jun 17, 2026

CVE-2018-3846 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 3.07% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

3.07%

86.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Nasa	Cfitsio	3.42
Fedoraproject	Fedora	28

References

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K46I2MFPCEOGC5LLDXZSWPB3EBPON3KA/
https://security.gentoo.org/glsa/202101-24Third Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0529Exploit, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K46I2MFPCEOGC5LLDXZSWPB3EBPON3KA/
https://security.gentoo.org/glsa/202101-24Third Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0529Exploit, Third Party Advisory

Timeline

Published: Apr 16, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-3846?

How severe is CVE-2018-3846?

CVE-2018-3846 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 3.07% probability of exploitation in the next 30 days.

How do I fix CVE-2018-3846?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-3846?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST