Vulnerability · Published Nov 28, 2025 · Assigned by Sonatype
CVE-2025-12183org.lz4:lz4-java - Out-of-Bounds Memory Access
High 8.8
In plain English
A high-severity out-of-bounds read in net.jpountz.lz4:lz4. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)8.8High
Exploit odds (30 days)0.7%top 45.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | lz4-java | no fix listed | DEBIAN-CVE-2025-12183 |
| Debian:13 | lz4-java | no fix listed | DEBIAN-CVE-2025-12183 |
| Debian:14 | lz4-java | 1.11.2+ds1-1 | DEBIAN-CVE-2025-12183 |
| Maven | at.yawk.lz4:lz4-java | 1.8.1 | GHSA-vqf4-7m7x-wgfc |
| Maven | net.jpountz.lz4:lz4 | no fix listed | GHSA-vqf4-7m7x-wgfc |
| Maven | org.lz4:lz4-java | 1.8.1 | GHSA-vqf4-7m7x-wgfc |
| Maven | org.lz4:lz4-pure-java | no fix listed | GHSA-vqf4-7m7x-wgfc |
| Ubuntu:22.04:LTS | lz4-java | no fix listed | UBUNTU-CVE-2025-12183 |
| Ubuntu:24.04:LTS | lz4-java | no fix listed | UBUNTU-CVE-2025-12183 |
| Ubuntu:25.10 | lz4-java | no fix listed | UBUNTU-CVE-2025-12183 |
| Ubuntu:26.04:LTS | lz4-java | no fix listed | UBUNTU-CVE-2025-12183 |
| Ubuntu:26.10 | lz4-java | no fix listed | UBUNTU-CVE-2025-12183 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| org.lz4:lz4-java | 1.0.0 – through 1.8.0 | |
| org.lz4:lz4-pure-java | 1.0.0 – through 1.8.0 | |
| net.jpountz.lz4:lz4 | 1.0.0 – through 1.8.0 |
Weakness: CWE-125 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N