CVE-2025-66719: Github.com/free5gc/nrf Free5gc NRF Is Vulnerable To Vulnerability

CRITICAL
Advisory Identifier: GHSA-q7c8-gfjh-8v4p
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CVSS 9.1
CWE-863
Published
Advisory Summary

CVE-2025-66719 is a CRITICAL (CVSS 9.1) free5gc nrf is vulnerable to vulnerability (CWE-863: Incorrect Authorization) affecting Github.com/free5gc/nrf libraries in the Go ecosystem. The issue involves free5gc nrf is vulnerable to scope validation bypass via maliciously crafted targetnf value. Remediation is available by upgrading affected packages to version 1.4.1.

CVE-2025-66719 at a Glance

CVE Identifier CVE-2025-66719
GHSA Identifier GHSA-q7c8-gfjh-8v4p
Severity CRITICAL
CVSS v3.1 Base Score 9.1
CWE Classification CWE-863: Incorrect Authorization
Affected Product Github.com/free5gc/nrf
Package Ecosystem Go
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:H/A:N).

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

How to Fix CVE-2025-66719

To remediate this vulnerability, upgrade all affected Github.com/free5gc/nrf dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/free5gc/nrf fixed: 1.4.1 
Upgrade github.com/free5gc/nrf to 1.4.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/free5gc/nrf

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-66719, inspect your project dependencies for Github.com/free5gc/nrf:

inspect dependencies for github.com/free5gc/nrf

Analyze the terminal output to locate any version of Github.com/free5gc/nrf in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.4.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Github.com/free5gc/nrf, 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

An issue was discovered in Free5gc NRF 1.4.0. In the access-token generation logic of free5GC, the AccessTokenScopeCheck() function in file internal/sbi/processor/access_token.go bypasses all scope validation when the attacker uses a crafted targetNF value. This allows attackers to obtain an access token with any arbitrary scope.

CVE-2025-66719 Affected Github.com/free5gc/nrf Versions

1 component(s)
Fixed Versions:
1.4.1
Product / Package Ecosystem Affected Versions Fixed Version
github.com/free5gc/nrf
golang/github.com/free5gc/nrf
Go
< 1.4.1
1.4.1

References

NVD — CVE-2025-66719 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-66719
Github.com/free5gc/nrf Source Repository REPOSITORY
https://github.com/free5gc/free5gc/issues/733
Github.com/free5gc/nrf Source Repository REPOSITORY
https://github.com/free5gc/free5gc/issues/736
Github.com/free5gc/nrf Source Repository REPOSITORY
https://github.com/free5gc/nrf/pull/73
Github.com/free5gc/nrf Source Repository REPOSITORY
https://github.com/free5gc/nrf

Frequently Asked Questions

What is CVE-2025-66719?
CVE-2025-66719 is a security vulnerability in Github.com/free5gc/nrf involving Free5gc NRF is vulnerable to scope validation bypass via maliciously crafted targetNF value under CWE-863: Incorrect Authorization.
Which Github.com/free5gc/nrf versions are affected?
Affected versions include releases prior to 1.4.1 across affected packages: github.com/free5gc/nrf.
What version fixes CVE-2025-66719?
Upgrading to 1.4.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/free5gc/nrf affected?
Yes, github.com/free5gc/nrf is affected in releases prior to 1.4.1. Upgrade your dependency to 1.4.1 or later.
What is the CVSS score of CVE-2025-66719?
CVE-2025-66719 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:H/A:N.
What CWE is associated with CVE-2025-66719?
CVE-2025-66719 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check Go dependencies for CVE-2025-66719?
Run the dependency tree command: 'inspect dependencies for github.com/free5gc/nrf'. 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-q7c8-gfjh-8v4p",
  "modified" : "2026-06-05T18:09:13Z",
  "published" : "2026-01-23T18:31:28Z",
  "aliases" : [ "CVE-2025-66719" ],
  "summary" : "Free5gc NRF is vulnerable to scope validation bypass via maliciously crafted targetNF value",
  "details" : "An issue was discovered in Free5gc NRF 1.4.0. In the access-token generation logic of free5GC, the AccessTokenScopeCheck() function in file internal/sbi/processor/access_token.go bypasses all scope validation when the attacker uses a crafted targetNF value. This allows attackers to obtain an access token with any arbitrary scope.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/free5gc/nrf"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.4.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-66719"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/free5gc/free5gc/issues/733"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/free5gc/free5gc/issues/736"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/free5gc/nrf/pull/73"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/free5gc/nrf"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-05T18:09:13Z",
    "nvd_published_at" : "2026-01-23T16:15:51Z"
  }
}