CVE-2025-32414Public exploit

Application crash via character-byte count mismatch

Published Apr 8, 2025 · Updated Nov 3, 2025

Out-of-bounds memory access in XMLSoft libxml2 before 2.13.8 and 2.14.0 through 2.14.1 allows local users to crash applications. The xmlPythonFileRead and xmlPythonFileReadRaw callbacks return a Python character count where libxml2 expects a byte count, so multibyte UTF-8 text can exceed the caller-supplied buffer. Exploitation requires an application using the Python bindings to parse a character stream containing crafted multibyte text, and the demonstrated consequence is an application crash.

CVSS severity5.6
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds memory access in XMLSoft libxml2 before 2.13.8 and 2.14.0 through 2.14.1 allows local users to crash applications. The xmlPythonFileRead and xmlPythonFileReadRaw callbacks return a Python character count where libxml2 expects a byte count, so multibyte UTF-8 text can exceed the caller-supplied buffer. Exploitation requires an application using the Python bindings to parse a character stream containing crafted multibyte text, and the demonstrated consequence is an application crash.

The record

CVE
CVE-2025-32414
Published
Apr 8, 2025
Updated
Nov 3, 2025
Vendor
XMLSoft
Product
libxml2
Classifications
CWE-393, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.13.8
  2. Affected versionversion=2.14.0 <2.14.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

XMLSoft · libxml2version=0 <2.13.8; version=2.14.0 <2.14.2

Published CVSS scores

5.6MITRE CNACVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-393Return of Wrong Status Code
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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