CVE-2025-57248Public exploitNetwork attack vector

Application crash via null DataPool receiver

Published Sep 15, 2025 · Updated Sep 15, 2025

Null pointer dereference in SumatraPDF 3.5.2 allows attackers to crash the application through a crafted DjVu file. During recursive DjVu chunk processing, DataPool::connect calls DataPool::has_data on an invalid DataPool object whose this pointer is null, and the method reads an offset from that pointer. A user must open the attacker-supplied file; the demonstrated consequence is an access violation that terminates the desktop process.

CVSS severity7.3
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in SumatraPDF 3.5.2 allows attackers to crash the application through a crafted DjVu file. During recursive DjVu chunk processing, DataPool::connect calls DataPool::has_data on an invalid DataPool object whose this pointer is null, and the method reads an offset from that pointer. A user must open the attacker-supplied file; the demonstrated consequence is an access violation that terminates the desktop process.

The record

CVE
CVE-2025-57248
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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