Null Pointer Dereference in Free5GC PCF by Free5GC
CVE-2026-1739

6.9MEDIUM

Key Information:

Vendor

Free5gc

Status
Pcf
Vendor
CVE Published:
2 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-1739?

A vulnerability exists in the Free5GC PCF affecting versions up to 1.4.1, where a null pointer dereference can occur within the HandleCreateSmPolicyRequest function of the smpolicy.go file. This flaw can be exploited remotely, potentially leading to denial of service. Users are urged to apply the available patch to mitigate the risk associated with this vulnerability, as it has been publicly disclosed and could be actively targeted by attackers.

Affected Version(s)

pcf 1.4.0

pcf 1.4.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-1739 - Proof of Concept

References

https://vuldb.com/?id.343638
vdb-entrytechnical-description
https://vuldb.com/?ctiid.343638
signaturepermissions-required
https://vuldb.com/?submit.741194
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

ZiyuLin (VulDB User)
.