CVE-2025-32415Public exploit

Application crash via stale identity-constraint pointer

Published Apr 17, 2025 · Updated Nov 3, 2025

Heap buffer under-read in XMLSoft libxml2 before 2.13.8 and 2.14.0 through 2.14.1 allows local users to crash consuming applications. xmlSchemaIDCFillNodeTables reuses a stale local pointer while filling identity-constraint node tables, causing an access before the allocated heap buffer. The crash path requires validation of a crafted schema or a crafted XML document against a schema containing certain identity constraints.

CVSS severity2.9
Low
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer under-read in XMLSoft libxml2 before 2.13.8 and 2.14.0 through 2.14.1 allows local users to crash consuming applications. xmlSchemaIDCFillNodeTables reuses a stale local pointer while filling identity-constraint node tables, causing an access before the allocated heap buffer. The crash path requires validation of a crafted schema or a crafted XML document against a schema containing certain identity constraints.

The record

CVE
CVE-2025-32415
Published
Apr 17, 2025
Updated
Nov 3, 2025
Vendor
XMLSoft
Product
libxml2
Classifications
CWE-1284, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 17, 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

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.9MITRE CNACVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

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-1284Improper Validation of Specified Quantity in Input
T1499Endpoint Denial of Service

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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