How severe is CVE-2018-3847?

CVE-2018-3847 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-3847 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-3847?

CVE-2018-3847 affects Nasa Cfitsio. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-3847?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-3847 published?

CVE-2018-3847 was published on 2018-08-01 and last updated on 2026-06-17.

CVE-2018-3847

CVE-2018-3847 is a high-severity vulnerability in Nasa Cfitsio with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Nasa Cfitsio
Published: 2018-08-01
Last modified: 2026-06-17

Description

Multiple exploitable buffer overflow vulnerabilities exist in image parsing functionality of the CFITSIO library version 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.

Frequently asked questions

What is CVE-2018-3847?: Multiple exploitable buffer overflow vulnerabilities exist in image parsing functionality of the CFITSIO library version 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.
How severe is CVE-2018-3847?: CVE-2018-3847 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-3847 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-3847?: CVE-2018-3847 affects Nasa Cfitsio. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-3847?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-3847 published?: CVE-2018-3847 was published on 2018-08-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nasa:cfitsio:3.42:*:*:*:*:*:*:*

More vulnerabilities in Nasa Cfitsio

CVE-2019-1010060 — Critical (CVSS 9.8): NASA CFITSIO prior to 3.43 is affected by: Buffer Overflow. The impact is: arbitrary code execution. The component is:…
CVE-2018-3849 — High (CVSS 8.8): In the ffghtb function in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based…
CVE-2018-3848 — High (CVSS 8.8): In the ffghbn function in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based…
CVE-2018-3846 — High (CVSS 8.8): In the ffgphd and ffgtkn functions in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a…

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