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CVE-2025-59375

Quick assessment

Affected
libexpat project libexpat
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Expat是Expat开源的一个快速流式 XML 解析器。 Expat 2.7.2之前版本存在安全漏洞，该漏洞源于小型文档解析时可能触发大量动态内存分配。

CVSS 7.5 · High EPSS 1.38% · P72

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
libexpat project libexpat < 2.7.2 affected
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I. Basic Information for CVE-2025-59375

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Expat 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Expat是Expat开源的一个快速流式 XML 解析器。 Expat 2.7.2之前版本存在安全漏洞，该漏洞源于小型文档解析时可能触发大量动态内存分配。
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
libexpat project libexpat 0 ~ 2.7.2 -

II. Public POCs for CVE-2025-59375

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 14419 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2025-59375

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IV. Related Vulnerabilities

Same product: libexpat
Same vendor: libexpat project
Same weakness: CWE-770