CVE-2026-80943: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-8f9m-rj4x-3w9p
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CVSS 7.6
Published
Advisory Summary

CVE-2026-80943 is a HIGH (CVSS 7.6) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-80943 at a Glance

CVE Identifier CVE-2026-80943
GHSA Identifier GHSA-8f9m-rj4x-3w9p
Severity HIGH
CVSS v3.1 Base Score 7.6
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.6

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

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

How to Fix CVE-2026-80943

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-2026-80943, 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: wifi: rtlwifi: rtl8192du: check QoS TID before indexing tids rtl92du_tx_fill_desc() uses ieee80211_get_tid() to read the QoS TID from the 802.11 header and then uses it as an index into sta_entry->tids[]. ieee80211_get_tid() returns the low 4-bit QoS TID value, so the result can be in the range 0..15. rtlwifi only allocates MAX_TID_COUNT entries for sta_entry->tids[], and MAX_TID_COUNT is 9. A QoS TID greater than 8 therefore indexes past the aggregation state array. Keep the default RTL_AGG_STOP state for out-of-range TIDs, matching rtl92cu_tx_fill_desc(). This issue was detected by our static analysis tool and confirmed by manual audit. UBSAN validation for the same bug pattern reports an array-index-out-of-bounds access with index 10 for type 'rtl_tid_data [9]'.

References

NVD — CVE-2026-80943 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80943
git.kernel.org/stable/c/0c0b374e12... WEB
https://git.kernel.org/stable/c/0c0b374e12d52af23ca741728db31091677cf9dc
git.kernel.org/stable/c/42785f7e8d... WEB
https://git.kernel.org/stable/c/42785f7e8d31540e6172bbcf08a7cc3cae1086f8
git.kernel.org/stable/c/6e327f14e1... WEB
https://git.kernel.org/stable/c/6e327f14e1c43e175bf530f9165b2cadff308553
git.kernel.org/stable/c/ed4f05d9f2... WEB
https://git.kernel.org/stable/c/ed4f05d9f2f42fd866f55108db8123eefcc5fb33

Frequently Asked Questions

What is CVE-2026-80943?
CVE-2026-80943 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-2026-80943?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-80943?
CVE-2026-80943 has a CVSS v3.1 base score of 7.6 (HIGH) with vector string CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H.
What CWE is associated with CVE-2026-80943?
CVE-2026-80943 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80943?
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-8f9m-rj4x-3w9p",
  "modified" : "2026-09-13T09:32:09Z",
  "published" : "2026-09-11T21:31:20Z",
  "aliases" : [ "CVE-2026-80943" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtlwifi: rtl8192du: check QoS TID before indexing tids\n\nrtl92du_tx_fill_desc() uses ieee80211_get_tid() to read the QoS TID\nfrom the 802.11 header and then uses it as an index into\nsta_entry->tids[]. ieee80211_get_tid() returns the low 4-bit QoS TID\nvalue, so the result can be in the range 0..15.\n\nrtlwifi only allocates MAX_TID_COUNT entries for sta_entry->tids[], and\nMAX_TID_COUNT is 9. A QoS TID greater than 8 therefore indexes past the\naggregation state array. Keep the default RTL_AGG_STOP state for\nout-of-range TIDs, matching rtl92cu_tx_fill_desc().\n\nThis issue was detected by our static analysis tool and confirmed by\nmanual audit. UBSAN validation for the same bug pattern reports an\narray-index-out-of-bounds access with index 10 for type\n'rtl_tid_data [9]'.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80943"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0c0b374e12d52af23ca741728db31091677cf9dc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/42785f7e8d31540e6172bbcf08a7cc3cae1086f8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6e327f14e1c43e175bf530f9165b2cadff308553"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ed4f05d9f2f42fd866f55108db8123eefcc5fb33"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:18:59Z"
  }
}