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CVE-2025-12183

Severity8.8 High CVSS 4.0
Fixed in1.8.1
WeaknessOut-of-bounds read (CWE-125)
Published28 Nov 2025
Updated4 Nov 2026

Description

Out-of-bounds memory operations in org.lz4:lz4-java 1.8.0 and earlier allow remote attackers to cause denial of service and read adjacent memory via untrusted compressed input.

Exploitation status

No public exploit

No exploit has been reported in the sources we check.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC none indexed
  • EPSS 0.75% chance in 30 days

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists.

  • Protection none
  • Action unverified
  • Review automated Upstream data
  • Record active
Decided by Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update July 2026 ↗ CPU 2026-Q3 Oracle Siebel CRM / Server Infrastructure (Apache ZooKeeper) (17.0-26.5)
Oracle Critical Patch Update April 2026 ↗ CPU 2026-Q2 Oracle Financial Services Applications / Infrastructure (lz4-java) (14.8.0.0.0)
Oracle Critical Patch Update January 2026 ↗ CPU 2026-Q1 Oracle Java SE / Mission Control (lz4-java) (Oracle JDK Mission Control: 9.1.1)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Financial Services Applications Infrastructure (lz4-java) 14.8.0.0.0 14.8.0.0.0
Oracle Java SE Mission Control (lz4-java) Oracle JDK Mission Control: 9.1.1 9.1.1.0
Oracle Siebel CRM Server Infrastructure (Apache ZooKeeper) 17.0-26.5

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
at.yawk.lz4:lz4-java 0 1.8.1 unbounded
org.lz4:lz4-java 0 1.8.1 unbounded
org.lz4:lz4-pure-java 0 none 1.8.0
net.jpountz.lz4:lz4 0 none 1.3.0

Products and versions

4 products, 4 version entries
SourceVendorProductSchemeAffected versions
osv at.yawk.lz4 lz4-java generic < 1.8.1
osv net.jpountz.lz4 lz4 generic ≤ 1.3.0
osv org.lz4 lz4-java generic < 1.8.1
osv org.lz4 lz4-pure-java generic ≤ 1.8.0

References

URLTags
https://github.com/yawkat/lz4-java PACKAGE
https://github.com/yawkat/lz4-java/releases/tag/v1.8.1 WEB
https://sites.google.com/sonatype.com/vulnerabilities/cve-2025-12183 WEB
https://www.sonatype.com/security-advisories/cve-2025-12183 WEB
http://www.openwall.com/lists/oss-security/2025/12/01/5 WEB

Timeline

Published2025-11-28By the CVE Program.
NVD record modified2026-11-04NVD's own last-modified date for this record.