CVE-2026-64446: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-49pq-8ggv-fqjq
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CVSS 7.8
CWE-787
Published
Advisory Summary

CVE-2026-64446 is a HIGH (CVSS 7.8) security vulnerability vulnerability (CWE-787: Out-of-bounds Write) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product writes data past the end, or before the beginning, of the intended buffer.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-64446 at a Glance

CVE Identifier CVE-2026-64446
GHSA Identifier GHSA-49pq-8ggv-fqjq
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification CWE-787: Out-of-bounds Write
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-2026-64446

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-2026-64446, 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-787: Out-of-bounds Write, where the product writes 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: staging: rtl8723bs: fix heap buffer overflow in rtw_cfg80211_set_wpa_ie() supplicant_ie is a 256-byte array in struct security_priv. The WPA and WPA2 IE copy paths use: memcpy(padapter->securitypriv.supplicant_ie, &pwpa[0], wpa_ielen + 2); where wpa_ielen is the raw IE length field (u8, 0-255). When a local user supplies a connect request via nl80211 with a crafted WPA IE of length 255, wpa_ielen + 2 equals 257, overflowing the 256-byte buffer by one byte into the adjacent last_mic_err_time field. rtw_parse_wpa_ie() does not prevent this: its length consistency check compares *(wpa_ie+1) against (u8)(wpa_ie_len-2), which is (u8)(255) == 255 when wpa_ie_len = 257, so the check passes silently. Add explicit bounds checks for both the WPA and WPA2 paths before the memcpy, rejecting any IE whose total size (wpa_ielen + 2) exceeds the supplicant_ie buffer.

References

NVD — CVE-2026-64446 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64446
git.kernel.org/stable/c/138cd190ef... WEB
https://git.kernel.org/stable/c/138cd190efd56ab36c9fdd8fef8749d06937f24b
git.kernel.org/stable/c/2131621986... WEB
https://git.kernel.org/stable/c/2131621986c62c86109ce4d84cf73a73757eb8a6
git.kernel.org/stable/c/46f66c16a9... WEB
https://git.kernel.org/stable/c/46f66c16a95191d9aca07a72ae6b1252a244e26c
git.kernel.org/stable/c/5a752a616e... WEB
https://git.kernel.org/stable/c/5a752a616e756844388a1a45404db9fc29fec655
git.kernel.org/stable/c/5d7812360a... WEB
https://git.kernel.org/stable/c/5d7812360abf3143afcbf5efe4ef242448fa1f28
git.kernel.org/stable/c/6f20d7b0ee... WEB
https://git.kernel.org/stable/c/6f20d7b0ee47c470734a69379b0fc6647c519603
git.kernel.org/stable/c/a94a643a80... WEB
https://git.kernel.org/stable/c/a94a643a80a84ceb8139061c3d6bf988d75e45a5
git.kernel.org/stable/c/b9c4bf133c... WEB
https://git.kernel.org/stable/c/b9c4bf133c3c47e23baf4f5403b98a953bf58606

Frequently Asked Questions

What is CVE-2026-64446?
CVE-2026-64446 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-787: Out-of-bounds Write.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-64446?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-64446?
CVE-2026-64446 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-2026-64446?
CVE-2026-64446 is classified under CWE-787: Out-of-bounds Write (The product writes data past the end, or before the beginning, of the intended buffer.).
How can I check Maven dependencies for CVE-2026-64446?
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-49pq-8ggv-fqjq",
  "modified" : "2026-09-03T18:31:19Z",
  "published" : "2026-07-25T12:31:36Z",
  "aliases" : [ "CVE-2026-64446" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix heap buffer overflow in rtw_cfg80211_set_wpa_ie()\n\nsupplicant_ie is a 256-byte array in struct security_priv. The WPA and\nWPA2 IE copy paths use:\n\n    memcpy(padapter->securitypriv.supplicant_ie, &pwpa[0], wpa_ielen + 2);\n\nwhere wpa_ielen is the raw IE length field (u8, 0-255). When a local user\nsupplies a connect request via nl80211 with a crafted WPA IE of length 255,\nwpa_ielen + 2 equals 257, overflowing the 256-byte buffer by one byte into\nthe adjacent last_mic_err_time field.\n\nrtw_parse_wpa_ie() does not prevent this: its length consistency check\ncompares *(wpa_ie+1) against (u8)(wpa_ie_len-2), which is (u8)(255) == 255\nwhen wpa_ie_len = 257, so the check passes silently.\n\nAdd explicit bounds checks for both the WPA and WPA2 paths before the\nmemcpy, rejecting any IE whose total size (wpa_ielen + 2) exceeds the\nsupplicant_ie buffer.",
  "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-2026-64446"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/138cd190efd56ab36c9fdd8fef8749d06937f24b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2131621986c62c86109ce4d84cf73a73757eb8a6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/46f66c16a95191d9aca07a72ae6b1252a244e26c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5a752a616e756844388a1a45404db9fc29fec655"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5d7812360abf3143afcbf5efe4ef242448fa1f28"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6f20d7b0ee47c470734a69379b0fc6647c519603"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a94a643a80a84ceb8139061c3d6bf988d75e45a5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b9c4bf133c3c47e23baf4f5403b98a953bf58606"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-787" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-25T10:17:29Z"
  }
}