Artifex MuPDF up to 1.27.0 pdf-image.c pdf_load_image_imp integer overflow

Summaryinfo

A vulnerability, which was classified as critical, has been found in Artifex MuPDF up to 1.27.0. The impacted element is the function pdf_load_image_imp of the file pdf-image.c. The manipulation leads to integer overflow. This vulnerability is listed as CVE-2026-3308. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Artifex MuPDF up to 1.27.0. It has been rated as critical. This issue affects the function pdf_load_image_imp of the file pdf-image.c. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An integer overflow vulnerability in 'pdf-image.c' in Artifex's MuPDF version 1.27.0 allows an attacker to maliciously craft a PDF that can trigger an integer overflow within the 'pdf_load_image_imp' function. This allows a heap out-of-bounds write that could be exploited for arbitrary code execution.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-3308 since 02/26/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/31/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Document Reader Software

Vendor

• Artifex

Name

• MuPDF

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27.0

License

• commercial

Website

• Vendor: https://artifex.com/

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