CVE-2025-4638Network attack vector

Undefined behavior via out-of-bounds pointer arithmetic

Published May 14, 2025 · Updated May 15, 2025

Undefined behavior in Point Cloud Library before 1.15.0 allows context-dependent attackers to trigger undefined behavior during decompression. The bundled zlib inftrees.c code subtracts 257 from the lbase and lext array pointers, creating pointers outside their arrays before indexed access. Affected builds either predate 1.14.0 or use 1.14.0 and later with WITH_SYSTEM_ZLIB disabled; published sources establish no specific runtime outcome.

CVSS severity9.2
Critical
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Undefined behavior in Point Cloud Library before 1.15.0 allows context-dependent attackers to trigger undefined behavior during decompression. The bundled zlib inftrees.c code subtracts 257 from the lbase and lext array pointers, creating pointers outside their arrays before indexed access. Affected builds either predate 1.14.0 or use 1.14.0 and later with WITH_SYSTEM_ZLIB disabled; published sources establish no specific runtime outcome.

The record

CVE
CVE-2025-4638
Published
May 14, 2025
Updated
May 15, 2025
Vendor
Point Cloud Library
Product
Point Cloud Library
Classifications
CWE-119
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 14, 2025CVE publishedPublication date reported by the CVE source.
  2. May 15, 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 <<1.15.0 changes=[{"at":"patch 1.15.0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Point Cloud Library · Point Cloud Libraryversion=0 <<1.15.0 changes=[{"at":"patch 1.15.0","status":"unaffected"}]

Published CVSS scores

9.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.2Government Technology Agency of Singapore Cyber Security GroupCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:L/SA: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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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