How severe is CVE-2018-16647?

CVE-2018-16647 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-16647 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-16647?

CVE-2018-16647 affects Artifex Mupdf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-16647?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-16647 published?

CVE-2018-16647 was published on 2018-09-06 and last updated on 2026-06-17.

CVE-2018-16647

CVE-2018-16647 is a medium-severity vulnerability in Artifex Mupdf with a CVSS 3.x base score of 5.5. 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-119.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Artifex Mupdf
Published: 2018-09-06
Last modified: 2026-06-17

Description

In Artifex MuPDF 1.13.0, the pdf_get_xref_entry function in pdf/pdf-xref.c allows remote attackers to cause a denial of service (segmentation fault in fz_write_data in fitz/output.c) via a crafted pdf file.

Frequently asked questions

What is CVE-2018-16647?: In Artifex MuPDF 1.13.0, the pdf_get_xref_entry function in pdf/pdf-xref.c allows remote attackers to cause a denial of service (segmentation fault in fz_write_data in fitz/output.c) via a crafted pdf file.
How severe is CVE-2018-16647?: CVE-2018-16647 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-16647 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-16647?: CVE-2018-16647 affects Artifex Mupdf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-16647?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-16647 published?: CVE-2018-16647 was published on 2018-09-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:artifex:mupdf:1.13.0:*:*:*:*:*:*:*

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