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CVE-2025-40929— Cpanel::JSON::XS before version 4.40 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact

Quick assessment

Affected
RURBAN Cpanel::JSON::XS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cpanel::JSON::XS是用于将 Perl 数据结构转换为 JSON 的工具。 Cpanel::JSON::XS 4.40之前版本存在安全漏洞，该漏洞源于整数缓冲区溢出，可能导致拒绝服务攻击。

AI Predicted 5.3 Difficulty: Easy EPSS 0.44% · P36

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-40929

Vulnerability Information
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Vulnerability Title
Cpanel::JSON::XS before version 4.40 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact
Source: CVE Program / CVE List V5
Vulnerability Description
Cpanel::JSON::XS before version 4.40 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Cpanel::JSON::XS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cpanel::JSON::XS是用于将 Perl 数据结构转换为 JSON 的工具。 Cpanel::JSON::XS 4.40之前版本存在安全漏洞，该漏洞源于整数缓冲区溢出，可能导致拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
RURBAN Cpanel::JSON::XS 0 ~ 4.40 -

II. Public POCs for CVE-2025-40929

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III. Intelligence Information for CVE-2025-40929

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IV. Related Vulnerabilities

Same product: Cpanel::JSON::XS
Same vendor: RURBAN
Same weakness: CWE-122

V. Comments for CVE-2025-40929

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