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CVE-2018-25306

PDFunite 0.41.0 Buffer Overflow via Malformed PDF

6.9 Medium

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.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.18%Up 0.2 points since Apr 30, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.9

PDFunite 0.41.0 Buffer Overflow via Malformed PDF

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.

Record
CVE-2018-25306
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-120
Updated
2026-11-02
EUVDEUVD-2018-21827 6.9

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.

Record
EUVD-2018-21827
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-4ghp-74c4-9grw 6.9

PDFunite 0.41.0 contains a buffer overflow vulnerability that allows local attackers to crash the...

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.

Record
GHSA-4ghp-74c4-9grw
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-120
Updated
2026-11-02
NVD 6.9

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.

Record
CVE-2018-25306
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-120
Updated
2026-11-02
OSVUBUNTU-CVE-2018-25306 6.9

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.

Record
UBUNTU-CVE-2018-25306
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1
6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
poppler
Ubuntu:Pro:16.04:LTS
 All versions, plus listed versions
0.33.0-0ubuntu30.37.0-0ubuntu10.38.0-0ubuntu10.41.0-0ubuntu10.41.0-0ubuntu1.1
Show 23 moreShow less
0.41.0-0ubuntu1.20.41.0-0ubuntu1.30.41.0-0ubuntu1.40.41.0-0ubuntu1.50.41.0-0ubuntu1.60.41.0-0ubuntu1.70.41.0-0ubuntu1.80.41.0-0ubuntu1.90.41.0-0ubuntu1.100.41.0-0ubuntu1.110.41.0-0ubuntu1.120.41.0-0ubuntu1.130.41.0-0ubuntu1.140.41.0-0ubuntu1.150.41.0-0ubuntu1.160.41.0-0ubuntu1.16+esm10.41.0-0ubuntu1.16+esm20.41.0-0ubuntu1.16+esm30.41.0-0ubuntu1.16+esm40.41.0-0ubuntu1.16+esm50.41.0-0ubuntu1.16+esm60.41.0-0ubuntu1.16+esm70.41.0-0ubuntu1.16+esm8
 None known
poppler
Ubuntu:Pro:18.04:LTS
 All versions, plus listed versions
0.57.0-2ubuntu40.57.0-2ubuntu50.62.0-1ubuntu10.62.0-2ubuntu10.62.0-2ubuntu2
Show 21 moreShow less
0.62.0-2ubuntu2.10.62.0-2ubuntu2.20.62.0-2ubuntu2.40.62.0-2ubuntu2.50.62.0-2ubuntu2.60.62.0-2ubuntu2.70.62.0-2ubuntu2.80.62.0-2ubuntu2.90.62.0-2ubuntu2.100.62.0-2ubuntu2.110.62.0-2ubuntu2.120.62.0-2ubuntu2.130.62.0-2ubuntu2.140.62.0-2ubuntu2.14+esm10.62.0-2ubuntu2.14+esm20.62.0-2ubuntu2.14+esm30.62.0-2ubuntu2.14+esm40.62.0-2ubuntu2.14+esm50.62.0-2ubuntu2.14+esm60.62.0-2ubuntu2.14+esm70.62.0-2ubuntu2.14+esm8
 None known
poppler
Ubuntu:Pro:20.04:LTS
 All versions, plus listed versions
0.80.0-0ubuntu10.80.0-0ubuntu30.80.0-0ubuntu40.80.0-0ubuntu50.85.0-1ubuntu1
Show 12 moreShow less
0.85.0-1ubuntu30.86.1-0ubuntu10.86.1-0ubuntu1.10.86.1-0ubuntu1.20.86.1-0ubuntu1.30.86.1-0ubuntu1.40.86.1-0ubuntu1.50.86.1-0ubuntu1.60.86.1-0ubuntu1.70.86.1-0ubuntu1.7+esm10.86.1-0ubuntu1.7+esm20.86.1-0ubuntu1.7+esm3
 None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-25306 is a medium vulnerability (CVSS 6.9) in Canonical Pdfunite, published April 29, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. No source names a fixed version.

References

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