CVE-2025-57248 Null dereference in n/a

High 7.3 Published 15 Sep 2025 Updated 15 Sep 2025

An attacker can cause a denial of service by tricking a user into opening a crafted .djvu file in SumatraPDF, crashing the application.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-57248?

CVE-2025-57248 is a high-severity vulnerability in n/a, published on 15 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A null pointer dereference vulnerability was discovered in SumatraPDF 3.5.2 during the processing of a crafted .djvu file. When the file is opened, the application crashes inside libmupdf.dll, specifically in the DataPool::has_data() function.

Weakness: CWE-476

Which versions are affected by CVE-2025-57248?

It affects 1 product.

Products include Sumatrapdfreader Sumatrapdf.

How do I fix CVE-2025-57248?

No fix has been published for CVE-2025-57248 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-57248 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-57248 exists.

Sources

Also known as GHSA-5gwg-fch7-wh55.