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No exploitation reportedFix available

CVE-2018-3849

No exploitation reported by the sources we read.

  • Published2018-04-16
  • WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

In the ffghtb function 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.

Timeline

dates in UTC
  1. 2018-04-1616:29CVE publishedNVD

Versions per branch

NVD
Fedoraproject fedora
BranchAffectedFixed in
28.x= 28no fix published
Nasa cfitsio
BranchAffectedFixed in
3.490< 3.4903.490

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

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.

Packages

  • cfitsioUbuntu:16.04:LTSall versions · no fixed version listed
  • cfitsioopenEuler:22.03-LTSall versions · fixed in 3.490-1.oe2203
  • cfitsioopenEuler:20.03-LTS-SP3all versions · fixed in 3.490-1.oe1
  • cfitsioopenEuler:20.03-LTS-SP2all versions · fixed in 3.490-1.oe1
  • cfitsioopenEuler:20.03-LTS-SP1all versions · fixed in 3.490-1.oe1
  • cfitsioMageia:6all versions · fixed in 3.430-1.1.mga6
  • cfitsioDebian:14all versions · fixed in 3.430-1
  • cfitsioDebian:13all versions · fixed in 3.430-1

1 more package range on OSV.dev

Vendor advisories

  • CVE-2018-3849 Red Hat Product Security1 known affected

    cfitsio: Stack-based buffer overflow in ffghtb() allows for potential code execution

    cfitsio.src as a component of Red Hat Enterprise Linux 8

Full record on NVD

Fix

  1. No fix planned, says the vendor Red Hat Product Security CVE-2018-3849 · 1 productWill not fix

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.18.8read 2026-10-23
  • CNACVSS 3.08.8known since 2026-10-23
  • NVDCVSS 2.06.8read 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score3.6 %2026-11-08
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2018-04-16
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-qc33-hp9r-f794

Frequently asked questions

What is CVE-2018-3849?

In the ffghtb function 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.

Is CVE-2018-3849 actively exploited?

Active exploitation of CVE-2018-3849 has not been confirmed. Its EPSS score was 3.6% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-3849?

CVE-2018-3849 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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