CVE-2018-25306 PDFunite 0.41.0 Buffer Overflow via Malformed PDF
Local attackers can crash the PDFunite utility by processing malformed PDF files, causing a segmentation fault in the underlying poppler library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-25306?
CVE-2018-25306 is a medium-severity memory corruption vulnerability in poppler-utils PDFunite, published on 29 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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 function within libpoppler by providing a specially crafted PDF file to the pdfunite utility.
Weakness: CWE-120
Which versions are affected by CVE-2018-25306?
It affects 1 product.
Products include Canonical Pdfunite.
How do I fix CVE-2018-25306?
No fix has been published for CVE-2018-25306 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2018-25306 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-25306 exists.
Sources
Also known as GHSA-4ghp-74c4-9grw, UBUNTU-CVE-2018-25306.