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CVE-2016-6525

Heap-based buffer overflow in the pdf_load_mesh_params function in pdf/pdf-shade.c in MuPDF...

9.8 CriticalFix available

Heap-based buffer overflow in the pdf_load_mesh_params function in pdf/pdf-shade.c in MuPDF allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a large decode array.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

3.77%Down 0.8 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 9.8

Heap-based buffer overflow in the pdf_load_mesh_params function in pdf/pdf-shade.c in MuPDF allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a large decode array.

Record
CVE-2016-6525
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-119
Updated
2026-11-02
CVE List No score

Heap-based buffer overflow in the pdf_load_mesh_params function in pdf/pdf-shade.c in MuPDF allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a large decode array.

Record
CVE-2016-6525
Updated
2026-11-02
EUVDEUVD-2016-7446 No score

Heap-based buffer overflow in the pdf_load_mesh_params function in pdf/pdf-shade.c in MuPDF allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a large decode array.

Record
EUVD-2016-7446
Updated
2026-11-03
GitHub AdvisoriesGHSA-9g7x-w32v-gmpx 9.8

Heap-based buffer overflow in the pdf_load_mesh_params function in pdf/pdf-shade.c in MuPDF...

Heap-based buffer overflow in the pdf_load_mesh_params function in pdf/pdf-shade.c in MuPDF allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a large decode array.

Record
GHSA-9g7x-w32v-gmpx
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-119
Updated
2026-11-02
OSV 9.8

Heap-based buffer overflow in the pdf_load_mesh_params function in pdf/pdf-shade.c in MuPDF allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a large decode array.

Record
CVE-2016-6525
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2016-6525 9.8

Heap-based buffer overflow in the pdf_load_mesh_params function in pdf/pdf-shade.c in MuPDF allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a large decode array.

Record
DEBIAN-CVE-2016-6525
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2016-6525 9.8

Heap-based buffer overflow in the pdf_load_mesh_params function in pdf/pdf-shade.c in MuPDF allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a large decode array.

Record
UBUNTU-CVE-2016-6525
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2016-0286 No score

Updated mupdf packages fix security vulnerability

A flaw was discovered in the pdf_load_mesh_params() function allowing out-of-bounds write access to memory locations. With carefully crafted input, that could trigger a heap overflow, resulting in application crash or possibly having other unspecified impact (CVE-2016-6525).

Also, mupdf already contained the X11 viewer /usr/bin/mupdf-x11 but no mupdf binary to match the man page instructions. A symlink to mupdf-x11 now provides this (mga#19105).

Record
MGASA-2016-0286
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
mupdf
Debian:12
before 1.9a+ds1-1.2
1.9a+ds1-1.2
mupdf
Debian:13
before 1.9a+ds1-1.2
1.9a+ds1-1.2
mupdf
Debian:14
before 1.9a+ds1-1.2
1.9a+ds1-1.2
mupdf
Debian:7
before 0.9-2+deb7u3, plus listed versions
0.9-20.9-2+deb7u10.9-2+deb7u2
0.9-2+deb7u3
mupdf
Debian:8
From an advisory covering 2 CVEs
before 1.5-1+deb8u1, plus listed versions
1.5-1
1.5-1+deb8u1
mupdf
Mageia:5
before 1.5-4.4.mga5
1.5-4.4.mga5
mupdf
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
1.7-11.7a-11.7a-1ubuntu0.1~esm1
None known

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2016-6525 is a critical vulnerability (CVSS 9.8) in Artifex Mupdf, published August 8, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.77%, the 90th percentile. Fixed in mupdf 1.9a+ds1-1.2.

References

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