What is CVE-2018-25306?

CVE-2018-25306 is a medium-severity vulnerability in Poppler-utils Pdfunite, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2026-04-29.

How severe is CVE-2018-25306?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Buffer overflow in Poppler-utils Pdfunite

CVE-2018-25306

PDFunite 0.41.0 contains a buffer overflow vulnerability that allows local attackers to crash the application by processing malformed PDF files during merge operations. Attackers can trigger a segmentation fault in the XRef::getEntry funct…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (4.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Poppler-utils Pdfunite — versions 0.41.0
Canonical Pdfunite — versions 0.41.0

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

ExploitDB-44490 (Exploit, exploit, VDB Entry)
Official Product Homepage (Product, product)
Product Reference (Product, product)
VulnCheck Advisory: PDFunite 0.41.0 Buffer Overflow via Malformed PDF (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2018-25306?: CVE-2018-25306 is a medium-severity vulnerability in Poppler-utils Pdfunite, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.2/10. Published 2026-04-29.
How severe is CVE-2018-25306?: Medium severity. CVSS v3 base score is 6.2 out of 10.