XnView Classic 2.51.3/2.51.5 RWZ File Parser integer underflow

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in XnView Classic. The affected element is an unknown function of the component RWZ File Parser. Performing a manipulation results in integer underflow. This vulnerability is reported as CVE-2024-11950. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in XnView Classic. This affects some unknown processing of the component RWZ File Parser. The manipulation with an unknown input leads to a integer underflow vulnerability. CWE is classifying the issue as CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

XnSoft XnView Classic RWZ File Parsing Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of XnSoft XnView Classic. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of RWZ files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-22913.

The advisory is shared at zerodayinitiative.com. This vulnerability is uniquely identified as CVE-2024-11950 since 11/27/2024. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

Upgrading to version 2.52.0 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 7.8
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Integer underflow
CWE: CWE-191 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Classic 2.52.0

Timelineinfo

11/27/2024 🔍
12/02/2024 +5 days 🔍
12/02/2024 +0 days 🔍
05/05/2026 +519 days 🔍

Sourcesinfo

Advisory: ZDI-24-1640
Status: Confirmed

CVE: CVE-2024-11950 (🔍)
GCVE (CVE): GCVE-0-2024-11950
GCVE (VulDB): GCVE-100-286677

Entryinfo

Created: 12/02/2024 22:09
Updated: 05/05/2026 11:49
Changes: 12/02/2024 22:09 (51), 02/22/2025 13:53 (3), 08/16/2025 01:19 (22), 05/05/2026 11:46 (2), 05/05/2026 11:49 (7)
Complete: 🔍
Committer: lywand
Cache ID: 216::103

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