CVE-2026-43085: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-rp69-c9w2-rv4p
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CVSS 5.5
Published
Advisory Summary

CVE-2026-43085 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-43085 at a Glance

CVE Identifier CVE-2026-43085
GHSA Identifier GHSA-rp69-c9w2-rv4p
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.5

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

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

How to Fix CVE-2026-43085

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

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

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-43085, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software 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 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 General Security Weakness. In Software, 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

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: initialize nfgenmsg in NLMSG_DONE terminator When batching multiple NFLOG messages (inst->qlen > 1), __nfulnl_send() appends an NLMSG_DONE terminator with sizeof(struct nfgenmsg) payload via nlmsg_put(), but never initializes the nfgenmsg bytes. The nlmsg_put() helper only zeroes alignment padding after the payload, not the payload itself, so four bytes of stale kernel heap data are leaked to userspace in the NLMSG_DONE message body. Use nfnl_msg_put() to build the NLMSG_DONE terminator, which initializes the nfgenmsg payload via nfnl_fill_hdr(), consistent with how __build_packet_message() already constructs NFULNL_MSG_PACKET headers.

References

NVD — CVE-2026-43085 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43085
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-457936.html
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-784472.html
git.kernel.org/stable/c/15d209bccf... WEB
https://git.kernel.org/stable/c/15d209bccf9273b4a8b4e579ba0e92d065b6ec8c
git.kernel.org/stable/c/1f3083aec8... WEB
https://git.kernel.org/stable/c/1f3083aec8836213da441270cdb1ab612dd82cf4
git.kernel.org/stable/c/296f18e1c3... WEB
https://git.kernel.org/stable/c/296f18e1c3a87c915a92ed27832d5040a22d1072
git.kernel.org/stable/c/368c22aea4... WEB
https://git.kernel.org/stable/c/368c22aea490f6f50df831b4f9e3623787686c5b
git.kernel.org/stable/c/57cc509d82... WEB
https://git.kernel.org/stable/c/57cc509d82b46150a11dcecc8b25eaa177eda34d
git.kernel.org/stable/c/9e2182865d... WEB
https://git.kernel.org/stable/c/9e2182865de781c41ab16b7985e9d26dcefea867
git.kernel.org/stable/c/d1399632ba... WEB
https://git.kernel.org/stable/c/d1399632ba255d2e02c757af5d9f5d9279ce168c
git.kernel.org/stable/c/d552bcfca3... WEB
https://git.kernel.org/stable/c/d552bcfca323d175664d7444989b04f55666978a

Frequently Asked Questions

What is CVE-2026-43085?
CVE-2026-43085 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-43085?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-43085?
CVE-2026-43085 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-43085?
CVE-2026-43085 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-43085?
Run the dependency tree command: 'mvn dependency:tree'. 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-rp69-c9w2-rv4p",
  "modified" : "2026-10-15T03:35:49Z",
  "published" : "2026-05-06T12:30:26Z",
  "aliases" : [ "CVE-2026-43085" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_log: initialize nfgenmsg in NLMSG_DONE terminator\n\nWhen batching multiple NFLOG messages (inst->qlen > 1), __nfulnl_send()\nappends an NLMSG_DONE terminator with sizeof(struct nfgenmsg) payload via\nnlmsg_put(), but never initializes the nfgenmsg bytes. The nlmsg_put()\nhelper only zeroes alignment padding after the payload, not the payload\nitself, so four bytes of stale kernel heap data are leaked to userspace\nin the NLMSG_DONE message body.\n\nUse nfnl_msg_put() to build the NLMSG_DONE terminator, which initializes\nthe nfgenmsg payload via nfnl_fill_hdr(), consistent with how\n__build_packet_message() already constructs NFULNL_MSG_PACKET headers.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-43085"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/15d209bccf9273b4a8b4e579ba0e92d065b6ec8c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1f3083aec8836213da441270cdb1ab612dd82cf4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/296f18e1c3a87c915a92ed27832d5040a22d1072"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/368c22aea490f6f50df831b4f9e3623787686c5b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/57cc509d82b46150a11dcecc8b25eaa177eda34d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9e2182865de781c41ab16b7985e9d26dcefea867"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d1399632ba255d2e02c757af5d9f5d9279ce168c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d552bcfca323d175664d7444989b04f55666978a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-05-06T10:16:21Z"
  }
}