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    CVE-2026-26025

    free5GC SMF provides Session Management Function for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, SMF panics and terminates when processing a malformed PFCP SessionReportRequest on the PFCP (UDP/8805) interface. No known upstream fix is available, but some workarounds are available. ACL/firewall the PFCP interface so only trusted UPF IPs can reach SMF (reduce spoofing/abuse surface); drop/inspect malformed PFCP SessionReportRequest messages at the network edge where feasible, and/or add recover() around PFCP handler dispatch to avoid whole-process termination (mitigation only).

    Published:Feb 24, 2026
    Last Modified:Apr 17, 2026
    EPS:Feb 24, 2026
    EPSS Score:0.00084
    CVSS Score:7.5

    Affected Products

    Vendor
    Free5gc
    Product
    Smf

    Exploits

    https://github.com/free5gc/free5gc/issues/807

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-26024 (CVSS 6.6) — free5GC SMF provides Session Management Function for free5GC, an open-source project for 5th generation (5G) m…
    CVE-2026-25501 (CVSS 6.6) — free5GC SMF provides Session Management Function for free5GC, an open-source project for 5th generation (5G) m…
    CVE-2025-69232 (CVSS 2.7) — free5GC is an open-source project for 5th generation (5G) mobile core networks. free5GC go-upf versions up to …
    CVE-2026-1684 (CVSS 6.9) — A vulnerability was found in Free5GC SMF up to 4.1.0. Affected by this issue is the function HandleReports of …
    CVE-2026-1683 (CVSS 5.5) — A vulnerability has been found in Free5GC SMF up to 4.1.0. Affected by this vulnerability is the function Hand…
    CVE-2026-1682 (CVSS 5.5) — A flaw has been found in Free5GC SMF up to 4.1.0. Affected is the function HandlePfcpAssociationReleaseRequest…
    CVE-2023-47346 (CVSS 7.5) — Buffer Overflow vulnerability in free5gc 3.3.0, UPF 1.2.0, and SMF 1.2.0 allows attackers to cause a denial of…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High