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CVE-2025-9714— Stack overflow in libxml2

Quick assessment

Affected
libxml2 libxml2
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.

libxml2是GNOME开源的一个用来解析XML文档的函数库。它用C语言写成，并且能为多种语言所调用，例如C语言，C++，XSH。 libxml2 2.9.14及之前版本存在安全漏洞，该漏洞源于XPath评估中存在未控制递归，可能导致栈溢出。

CVSS 6.2 · Medium EPSS 0.16% · P4

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 8

VendorProduct Version RangeStatus
libxml2 libxml2 < 2.10.0 affected
< 2.12.7+dfsg+really2.9.14-0.4ubuntu0.3 affected
< 2.9.14+dfsg-1.3ubuntu3.5 affected
< 2.9.13+dfsg-1ubuntu0.9 affected
< 2.9.10+dfsg-5ubuntu0.20.04.10+esm2 affected
< 2.9.4+dfsg1-6.1ubuntu1.9+esm5 affected
< 2.9.3+dfsg1-1ubuntu0.7+esm10 affected
< 2.9.1+dfsg1-3ubuntu4.13+esm9 affected
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I. Basic Information for CVE-2025-9714

Vulnerability Information
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Vulnerability Title
Stack overflow in libxml2
Source: CVE Program / CVE List V5
Vulnerability Description
Uncontrolled recursion in XPath evaluation in libxml2 up to and including version 2.9.14 allows a local attacker to cause a stack overflow via crafted expressions. XPath processing functions `xmlXPathRunEval`, `xmlXPathCtxtCompile`, and `xmlXPathEvalExpr` were resetting recursion depth to zero before making potentially recursive calls. When such functions were called recursively this could allow for uncontrolled recursion and lead to a stack overflow. These functions now preserve recursion depth across recursive calls, allowing recursion depth to be controlled.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的递归
Source: CVE Program / CVE List V5
Vulnerability Title
libxml2 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libxml2是GNOME开源的一个用来解析XML文档的函数库。它用C语言写成，并且能为多种语言所调用，例如C语言，C++，XSH。 libxml2 2.9.14及之前版本存在安全漏洞，该漏洞源于XPath评估中存在未控制递归，可能导致栈溢出。
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
libxml2 libxml2 0 ~ 2.10.0 -

II. Public POCs for CVE-2025-9714

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III. Intelligence Information for CVE-2025-9714

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IV. Related Vulnerabilities

Same product: libxml2
Same vendor: libxml2
Same weakness: CWE-674

V. Comments for CVE-2025-9714

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