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CVE-2026-1973

Status: AnalyzedMedium (5.5)—

A vulnerability was determined in Free5GC up to 4.1.0. The impacted element is the function establishPfcpSession of the component SMF. Executing a manipulation can lead to null pointer dereference. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. It is best practice to apply a patch to resolve this issue.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Free5gc — Free5gc

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2026-1973",
  "cveTags": [],
  "metrics": {
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          "exploitMaturity": "PROOF_OF_CONCEPT",
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          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
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          "modifiedAttackComplexity": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
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      "affectedData": [
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            "cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*"
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      "tags": [
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      "source": "cna@vuldb.com"
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      "url": "https://vuldb.com/?ctiid.344495",
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        "VDB Entry"
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      "description": [
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          "value": "CWE-404"
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          "value": "CWE-476"
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  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability was determined in Free5GC up to 4.1.0. The impacted element is the function establishPfcpSession of the component SMF. Executing a manipulation can lead to null pointer dereference. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. It is best practice to apply a patch to resolve this issue."
    },
    {
      "lang": "es",
      "value": "Se determinó una vulnerabilidad en Free5GC hasta la versión 4.1.0. El elemento afectado es la función establishPfcpSession del componente SMF. La ejecución de una manipulación puede llevar a una desreferencia de puntero nulo. El ataque puede lanzarse de forma remota. El exploit ha sido divulgado públicamente y puede utilizarse. Es una buena práctica aplicar un parche para resolver este problema."
    }
  ],
  "lastModified": "2026-06-17T10:16:48.460",
  "configurations": [
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              "versionEndIncluding": "4.1.0"
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}