Skip to main content
VulnerabilityPublished

CVE-2026-106805: A resource exhaustion issue exists in Free5GC v4.2.3 during PFCP Session Establishment failure handling

Affects free5gcSource CVE Database V5

0
Compare

Not known to be exploited.

Data as of 2 Nov 2026, 16:59 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 2 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
GitHubfree5gc/free5gcpkg:github/free5gc/free5gcOther threatsAffected
  • =4.2.3
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

Free5GC version 4.2.3 contains a resource exhaustion vulnerability during PFCP Session Establishment failure handling. If the SMF does not receive a PFCP Session Establishment Response from the UPF, UE IP address resources allocated are not released properly. This can lead to exhaustion of the UE IP address pool, preventing new UEs from establishing PDU sessions and causing a denial of service.

References

Community reviews

Loading reviews…