CVE-2025-57248: sumatrapdf Null Dereference

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.

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CVSS v3.1 Score

7.3

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
sumatrapdfreader	sumatrapdf	All

References

Advisories & Patches

https://github.com/sumatrapdfreader/sumatrapdf/issues/5035

Exploits

https://github.com/sumatrapdfreader/sumatrapdf/issues/5035

Frequently Asked Questions

What is CVE-2025-57248? +

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. It has a CVSS v3.1 base score of 7.3 (HIGH).

How severe is CVE-2025-57248? +

CVE-2025-57248 has a CVSS v3.1 score of 7.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-57248? +

CVE-2025-57248 affects products from sumatrapdfreader, specifically: sumatrapdf. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-57248? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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