CVE-2026-74549: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-8cf5-68w2-4vhx
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CVSS 7.8
Published
Advisory Summary

CVE-2026-74549 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-74549 at a Glance

CVE Identifier CVE-2026-74549
GHSA Identifier GHSA-8cf5-68w2-4vhx
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

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:H/I:H/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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-74549

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-2026-74549, 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: hwmon: (nct6775-core) Prevent access to unsupported weight registers Sashiko reports: During initialization of the nct6116 chip, the driver sets data->pwm_num to 5. However, it assigns several NCT6106 register arrays (such as NCT6106_REG_WEIGHT_DUTY_STEP, NCT6106_REG_WEIGHT_TEMP_SEL, and NCT6106_REG_WEIGHT_TEMP_*) to data->REG_PWM and data->REG_WEIGHT_TEMP. These arrays only contain 3 elements. In nct6775_update_pwm(), the driver iterates up to data->pwm_num. If data->has_pwm has bits 3 or 4 set (which is structurally possible for nct6116), the loop attempts to read elements at index 3 and 4 from these 3-element arrays. This results in a global out-of-bounds read, which can be caught by KASAN. Furthermore, the driver uses these garbage out-of-bounds values as hardware register addresses for subsequent read and write operations. This leads to invalid hardware register access, potentially causing hardware misconfiguration or system crashes. The underlying problem is that the chip does support up to five fan control channels, but only the first three support weight control. Fix the problem by extending the affected weight register arrays with zeroed fields. The driver uses zeroed register addresses to determine if a register is supported or not, and skips accesses for unsupported registers.

References

NVD — CVE-2026-74549 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74549
git.kernel.org/stable/c/0d11b2a102... WEB
https://git.kernel.org/stable/c/0d11b2a10269ace29832f584d207ff3768f79dc5
git.kernel.org/stable/c/1b722740ac... WEB
https://git.kernel.org/stable/c/1b722740ac5c2b2070f9ba922f4e0f227faf0246
git.kernel.org/stable/c/25b528816f... WEB
https://git.kernel.org/stable/c/25b528816f5d83be5236dc182692369e8c9402b0
git.kernel.org/stable/c/4a77f1d72c... WEB
https://git.kernel.org/stable/c/4a77f1d72c6db04cbbfab0250292ac71fdea5f0a
git.kernel.org/stable/c/4ad2972ef0... WEB
https://git.kernel.org/stable/c/4ad2972ef0e1bd1018ad7a72661a4636ed7daecc
git.kernel.org/stable/c/513d847f7a... WEB
https://git.kernel.org/stable/c/513d847f7a95bbdbeaaf55fb942c38992587734f
git.kernel.org/stable/c/689082a4cb... WEB
https://git.kernel.org/stable/c/689082a4cb166a7ae9729f7b12339e69fdad6c52
git.kernel.org/stable/c/d0b704e569... WEB
https://git.kernel.org/stable/c/d0b704e569ac3b8416d8e02270cdc9bf830ed395

Frequently Asked Questions

What is CVE-2026-74549?
CVE-2026-74549 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-2026-74549?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-74549?
CVE-2026-74549 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-74549?
CVE-2026-74549 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74549?
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-8cf5-68w2-4vhx",
  "modified" : "2026-08-19T18:32:31Z",
  "published" : "2026-08-15T15:30:36Z",
  "aliases" : [ "CVE-2026-74549" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (nct6775-core) Prevent access to unsupported weight registers\n\nSashiko reports:\n\nDuring initialization of the nct6116 chip, the driver sets data->pwm_num\nto 5. However, it assigns several NCT6106 register arrays (such as\nNCT6106_REG_WEIGHT_DUTY_STEP, NCT6106_REG_WEIGHT_TEMP_SEL, and\nNCT6106_REG_WEIGHT_TEMP_*) to data->REG_PWM and data->REG_WEIGHT_TEMP.\nThese arrays only contain 3 elements.\n\nIn nct6775_update_pwm(), the driver iterates up to data->pwm_num. If\ndata->has_pwm has bits 3 or 4 set (which is structurally possible for\nnct6116), the loop attempts to read elements at index 3 and 4 from these\n3-element arrays. This results in a global out-of-bounds read, which can\nbe caught by KASAN.\n\nFurthermore, the driver uses these garbage out-of-bounds values as\nhardware register addresses for subsequent read and write operations. This\nleads to invalid hardware register access, potentially causing hardware\nmisconfiguration or system crashes.\n\nThe underlying problem is that the chip does support up to five fan\ncontrol channels, but only the first three support weight control.\nFix the problem by extending the affected weight register arrays with\nzeroed fields. The driver uses zeroed register addresses to determine\nif a register is supported or not, and skips accesses for unsupported\nregisters.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-74549"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0d11b2a10269ace29832f584d207ff3768f79dc5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1b722740ac5c2b2070f9ba922f4e0f227faf0246"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/25b528816f5d83be5236dc182692369e8c9402b0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4a77f1d72c6db04cbbfab0250292ac71fdea5f0a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4ad2972ef0e1bd1018ad7a72661a4636ed7daecc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/513d847f7a95bbdbeaaf55fb942c38992587734f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/689082a4cb166a7ae9729f7b12339e69fdad6c52"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d0b704e569ac3b8416d8e02270cdc9bf830ed395"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-15T13:18:00Z"
  }
}