What is the CVSS score of CVE-2026-39006?

CVE-2026-39006 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Which versions of SNMP4J-Agent are affected by CVE-2026-39006?

SNMP4J-Agent 3.8.3 contains a critical remote code execution vulnerability (CVE-2026-39006) affecting any organization deploying this component.

How to fix or mitigate CVE-2026-39006?

24 hours: Identify all systems running SNMP4J-Agent 3.8.3 and restrict SNMP port access (161/UDP, 162/UDP) to authorized management systems only; enable detailed logging. 7 days: Implement network segmentation for SNMP infrastructure, disable agents where operationally feasible, and deploy IDS/IPS signatures for snmp4jCfgStoragePath exploitation attempts. 30 days: Monitor vendor advisories for patch release; prepare migration plan to patched versions or alternative SNMP solutions; conduct threat hunting for compromise indicators.

SNMP4J-Agent CVE-2026-39006

EUVD-2026-36759 CRITICAL

External Control of File Name or Path (CWE-73)

2026-06-15 mitre

GHSA-7h7j-7vwp-cwfg

RCE N A

9.8

CVSS 3.1 · Vendor: mitre

Severity by source

Vendor (mitre) PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

vuln.today AI

7.5 HIGH

snmp4jCfgStoragePath is a configuration property typically reachable via authenticated SNMP SET or management input, so PR:L and AC:H reflect needed control over that path; full RCE retains C/I/A High.

3.1 AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

4.0 AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (mitre).

CVSS VectorVendor: mitre

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Jun 16, 2026 - 15:29 vuln.today

CVSS changed

Jun 16, 2026 - 15:22 NVD

9.8 (CRITICAL)

CVE Published

Jun 15, 2026 - 00:00 cve.org

UNKNOWN (no severity yet)

DescriptionCVE.org

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

AnalysisAI

Remote code execution in SNMP4J-Agent 3.8.3 is enabled through the snmp4jCfgStoragePath component, allowing remote attackers to run arbitrary code on hosts running the agent. The CWE-73 (External Control of File Name or Path) classification indicates the storage path parameter can be manipulated to influence file operations, and no public exploit identified at time of analysis though a third-party advisory has been published on GitHub. EPSS is low at 0.21% (11th percentile) despite the 9.8 CVSS, suggesting limited current exploitation activity.

Technical ContextAI

SNMP4J-Agent is a Java-based SNMP agent framework (an extension of the SNMP4J library) used to embed SNMP v1/v2c/v3 agent functionality into Java applications and network management products. The vulnerable snmp4jCfgStoragePath component governs where the agent persists its configuration state, and the CWE-73 classification (External Control of File Name or Path) indicates this path value is influenced by attacker-controllable input without sufficient validation, enabling path traversal or arbitrary file write that escalates to code execution. CPE data is marked 'n/a' in NVD, which limits automated asset correlation, but the description explicitly pins the issue to SNMP4J-Agent version 3.8.3.

RemediationAI

No vendor-released patch identified at time of analysis; the only published reference is a third-party advisory at https://github.com/EaEa0001/security-advisories/blob/main/CVE-2026-39006.md and the NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2026-39006, neither of which cites a fixed SNMP4J-Agent release. Until an upstream fix is published, inventory all Java applications and network-management products that embed SNMP4J-Agent 3.8.3, restrict the snmp4jCfgStoragePath configuration property so it cannot be set or influenced by untrusted input, run the agent under a low-privilege service account on a filesystem mounted noexec where feasible (trade-off: may break legitimate write workflows), and place network ACLs in front of UDP 161/162 to limit reachable management consumers. Monitor the upstream SNMP4J project repository for a 3.8.4 or later release that addresses CWE-73 in the storage-path handler.