Is CVE-2018-3847 actively exploited?

No active exploitation of CVE-2018-3847 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-3847 be exploited remotely?

Yes. CVE-2018-3847 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-3847?

CVE-2018-3847 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2018-3847

CWE-787Published: August 1, 2018· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2018-3847 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.