CVE-2026-39006: Snmp4j agent SNMP4J-Agent Allows A Remote Attacker Vulnerability

CRITICAL
Advisory Identifier: GHSA-7h7j-7vwp-cwfg
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CVSS 9.8
CWE-73
Published
Advisory Summary

CVE-2026-39006 is a CRITICAL (CVSS 9.8) snmp4j-agent allows a remote attacker vulnerability (CWE-73: External Control of File Name or Path) affecting Snmp4j agent libraries in the Maven ecosystem. The issue involves snmp4j-agent allows a remote attacker to execute arbitrary code via the snmp4jcfgstoragepath component. Remediation is available in the latest vendor maintenance releases.

CVE-2026-39006 at a Glance

CVE Identifier CVE-2026-39006
GHSA Identifier GHSA-7h7j-7vwp-cwfg
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-73: External Control of File Name or Path
Affected Product Snmp4j agent
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-39006

To remediate this vulnerability, upgrade all affected Snmp4j agent dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.snmp4j:snmp4j-agent fixed: Latest secure release 
<dependency>
    <groupId>org.snmp4j</groupId>
    <artifactId>snmp4j-agent</artifactId>
    <version>Latest secure release</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.snmp4j

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-39006, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.snmp4j

Analyze the terminal output to locate any version of Snmp4j agent in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.snmp4j command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-73: External Control of File Name or Path, where the product allows user input to control or influence paths or file names that are used in filesystem operations. In Snmp4j agent, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

An issue in SNMP4J-Agent 3.8.3 allows a remote attacker to execute arbitrary code via the snmp4jCfgStoragePath component.

CVE-2026-39006 Affected Snmp4j agent Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
org.snmp4j:snmp4j-agent
maven/org.snmp4j/snmp4j-agent
Maven
≤ 3.8.3

References

NVD — CVE-2026-39006 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-39006
Snmp4j agent Source Repository REPOSITORY
https://github.com/EaEa0001/security-advisories/blob/main/CVE-2026-39006.md
PACKAGE
scm:git:git@nmp.app:snmp4j-agent.git

Frequently Asked Questions

What is CVE-2026-39006?
CVE-2026-39006 is a security vulnerability in Snmp4j agent involving SNMP4J-Agent allows a remote attacker to execute arbitrary code via the snmp4jCfgStoragePath component under CWE-73: External Control of File Name or Path.
Which Snmp4j agent versions are affected?
Affected versions include releases prior to current release patches across affected packages: org.snmp4j:snmp4j-agent.
What version fixes CVE-2026-39006?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is snmp4j-agent affected?
Yes, org.snmp4j:snmp4j-agent is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2026-39006?
CVE-2026-39006 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-39006?
CVE-2026-39006 is classified under CWE-73: External Control of File Name or Path (The product allows user input to control or influence paths or file names that are used in filesystem operations.).
How can I check Maven dependencies for CVE-2026-39006?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.snmp4j'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-7h7j-7vwp-cwfg",
  "modified" : "2026-08-26T14:53:01Z",
  "published" : "2026-06-15T21:30:39Z",
  "aliases" : [ "CVE-2026-39006" ],
  "summary" : "SNMP4J-Agent allows a remote attacker to execute arbitrary code via the snmp4jCfgStoragePath component",
  "details" : "An issue in SNMP4J-Agent 3.8.3 allows a remote attacker to execute arbitrary code via the snmp4jCfgStoragePath component.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.snmp4j:snmp4j-agent"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "3.8.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-39006"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/EaEa0001/security-advisories/blob/main/CVE-2026-39006.md"
  }, {
    "type" : "PACKAGE",
    "url" : "scm:git:git@nmp.app:snmp4j-agent.git"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-73" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-26T14:53:01Z",
    "nvd_published_at" : "2026-06-15T20:16:27Z"
  }
}