What is the CVSS score of CVE-2025-57248?

CVE-2025-57248 has a CVSS 3.1 base score of 7.3 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L. EPSS exploitation probability: 0.1%.

Which versions of Sumatrapdf are affected by CVE-2025-57248?

Organizations using A null pointer dereference vulnerability face moderate risk from CVE-2025-57248, a null pointer dereference vulnerability rated CVSS 7.3.

Is there a public PoC exploit available for CVE-2025-57248?

Yes, a public proof-of-concept exploit is available for CVE-2025-57248. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-57248?

Within 30 days: Identify all affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Sumatrapdf CVE-2025-57248

HIGH

NULL Pointer Dereference (CWE-476)

2025-09-15 cve@mitre.org

Denial Of Service Null Pointer Dereference Sumatrapdf

7.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.3 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:12 vuln.today

PoC Detected

Sep 20, 2025 - 02:48 vuln.today

Public exploit code

CVE Published

Sep 15, 2025 - 16:15 nvd

HIGH 7.3

DescriptionCVE.org

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.

AnalysisAI

A null pointer dereference vulnerability was discovered in SumatraPDF 3.5.2 during the processing of a crafted .djvu file. Rated high severity (CVSS 7.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as NULL Pointer Dereference (CWE-476), which allows attackers to crash the application by dereferencing a null pointer. 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. Affected products include: Sumatrapdfreader Sumatrapdf.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Check pointers before dereferencing. Use static analysis tools to detect null pointer paths.