CVE-2026-52999: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-vhgw-q6q5-v9w3
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CVSS 9.1
CWE-125
Published
Advisory Summary

CVE-2026-52999 is a CRITICAL (CVSS 9.1) security vulnerability vulnerability (CWE-125: Out-of-bounds Read) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product reads data past the end, or before the beginning, of the intended buffer.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-52999 at a Glance

CVE Identifier CVE-2026-52999
GHSA Identifier GHSA-vhgw-q6q5-v9w3
Severity CRITICAL
CVSS v3.1 Base Score 9.1
CWE Classification CWE-125: Out-of-bounds Read
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.1

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:N/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 None (I:N)
Availability High (A:H)

How to Fix CVE-2026-52999

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-2026-52999, 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 CWE-125: Out-of-bounds Read, where the product reads data past the end, or before the beginning, of the intended buffer. 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_osf: fix out-of-bounds read on option matching In nf_osf_match(), the nf_osf_hdr_ctx structure is initialized once and passed by reference to nf_osf_match_one() for each fingerprint checked. During TCP option parsing, nf_osf_match_one() advances the shared ctx->optp pointer. If a fingerprint perfectly matches, the function returns early without restoring ctx->optp to its initial state. If the user has configured NF_OSF_LOGLEVEL_ALL, the loop continues to the next fingerprint. However, because ctx->optp was not restored, the next call to nf_osf_match_one() starts parsing from the end of the options buffer. This causes subsequent matches to read garbage data and fail immediately, making it impossible to log more than one match or logging incorrect matches. Instead of using a shared ctx->optp pointer, pass the context as a constant pointer and use a local pointer (optp) for TCP option traversal. This makes nf_osf_match_one() strictly stateless from the caller's perspective, ensuring every fingerprint check starts at the correct option offset.

References

NVD — CVE-2026-52999 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-52999
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
git.kernel.org/stable/c/0145548346... WEB
https://git.kernel.org/stable/c/0145548346c4a30981a870a8ca00eac46ba27e85
git.kernel.org/stable/c/1c136f2c44... WEB
https://git.kernel.org/stable/c/1c136f2c44a5913646bac85303612fd0825197a0
git.kernel.org/stable/c/1e19a07291... WEB
https://git.kernel.org/stable/c/1e19a07291bb8682c14c39a64725a3ae54ab8ccc
git.kernel.org/stable/c/2188358759... WEB
https://git.kernel.org/stable/c/21883587593d7c8bb519a79460a0b5bc5ffbdabd
git.kernel.org/stable/c/32e50f92c7... WEB
https://git.kernel.org/stable/c/32e50f92c7cf3f4eba29622179a5fcdc2aebab41
git.kernel.org/stable/c/70a3f31d25... WEB
https://git.kernel.org/stable/c/70a3f31d25cf2ec9d4ddfa408120171ead955623
git.kernel.org/stable/c/edb78a142d... WEB
https://git.kernel.org/stable/c/edb78a142d2e5948e63647c0646aa7e7886935f0
git.kernel.org/stable/c/f5ca450087... WEB
https://git.kernel.org/stable/c/f5ca450087c3baf3651055e7a6de92600f827af3

Frequently Asked Questions

What is CVE-2026-52999?
CVE-2026-52999 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-125: Out-of-bounds Read.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-52999?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-52999?
CVE-2026-52999 has a CVSS v3.1 base score of 9.1 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
What CWE is associated with CVE-2026-52999?
CVE-2026-52999 is classified under CWE-125: Out-of-bounds Read (The product reads data past the end, or before the beginning, of the intended buffer.).
How can I check Maven dependencies for CVE-2026-52999?
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 
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  "id" : "GHSA-vhgw-q6q5-v9w3",
  "modified" : "2026-10-15T03:36:12Z",
  "published" : "2026-06-24T18:32:43Z",
  "aliases" : [ "CVE-2026-52999" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_osf: fix out-of-bounds read on option matching\n\nIn nf_osf_match(), the nf_osf_hdr_ctx structure is initialized once\nand passed by reference to nf_osf_match_one() for each fingerprint\nchecked. During TCP option parsing, nf_osf_match_one() advances the\nshared ctx->optp pointer.\n\nIf a fingerprint perfectly matches, the function returns early without\nrestoring ctx->optp to its initial state. If the user has configured\nNF_OSF_LOGLEVEL_ALL, the loop continues to the next fingerprint.\nHowever, because ctx->optp was not restored, the next call to\nnf_osf_match_one() starts parsing from the end of the options buffer.\nThis causes subsequent matches to read garbage data and fail\nimmediately, making it impossible to log more than one match or logging\nincorrect matches.\n\nInstead of using a shared ctx->optp pointer, pass the context as a\nconstant pointer and use a local pointer (optp) for TCP option\ntraversal. This makes nf_osf_match_one() strictly stateless from the\ncaller's perspective, ensuring every fingerprint check starts at the\ncorrect option offset.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
  } ],
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  "references" : [ {
    "type" : "ADVISORY",
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  }, {
    "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"
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  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1e19a07291bb8682c14c39a64725a3ae54ab8ccc"
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    "url" : "https://git.kernel.org/stable/c/21883587593d7c8bb519a79460a0b5bc5ffbdabd"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/32e50f92c7cf3f4eba29622179a5fcdc2aebab41"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/70a3f31d25cf2ec9d4ddfa408120171ead955623"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/edb78a142d2e5948e63647c0646aa7e7886935f0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f5ca450087c3baf3651055e7a6de92600f827af3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-125" ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-24T17:17:10Z"
  }
}