CVE-2026-107125
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Heap-based Buffer Overflow in XnView Classic

Vulnerability report for CVE-2026-107125, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-07

Last updated on: 2026-10-07

Assigner: VulDB

Description

A flaw has been found in XnView Classic 2.52.5. Impacted is an unknown function of the component FLI File Parser. This manipulation of the argument starting_line causes heap-based buffer overflow. Remote exploitation of the attack is possible. Upgrading to version 2.52.6 is recommended to address this issue. Upgrading the affected component is advised.

CVSS Scores

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Meta Information

Published
2026-10-07
Last Modified
2026-10-07
Generated
2026-10-07
AI Q&A
2026-10-07
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
XnView Classic 2.52.5

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

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Executive Summary

This vulnerability is a heap-based buffer overflow in XnView Classic 2.52.5 caused by a flaw in the FLI File Parser component. It occurs when the starting_line argument is manipulated, leading to potential remote exploitation. The issue is fixed in version 2.52.6.

Detection Guidance

This vulnerability is specific to XnView Classic 2.52.5 and involves a heap-based buffer overflow in the FLI File Parser component. Detection requires checking the installed version of XnView Classic. If you are running version 2.52.5 or earlier, the system is vulnerable. Use commands like 'xnview -version' on Windows or check the application properties on macOS/Linux to verify the version.

Impact Analysis

An attacker could exploit this to execute arbitrary code or cause a denial of service by sending a specially crafted file. Users running vulnerable versions should upgrade to 2.52.6 to mitigate the risk.

Compliance Impact

The provided CVE data does not specify how this vulnerability impacts compliance with GDPR, HIPAA, or other standards. The flaw involves a heap-based buffer overflow in the FLI File Parser component of XnView Classic, which could allow remote exploitation. Without explicit details on data exposure or processing impacts, it is unclear how this vulnerability would affect compliance requirements.

Mitigation Strategies

Upgrade XnView Classic to version 2.52.6 or later immediately. Download the update from the official XnView website and verify the SHA256 checksum to ensure authenticity. Remove or disable any affected FLI files if they are not required for operations.

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