Is CVE-2026-25501 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-25501, but active exploitation has not been confirmed.

Can CVE-2026-25501 be exploited remotely?

Yes. CVE-2026-25501 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-25501?

CVE-2026-25501 has a CVSS score of 7.5 (HIGH) and an EPSS exploitation probability of 0.04%.

HOME VULNERABILITIESCVE-2026-25501

HIGHPOC

CVE-2026-25501

CWE-476Published: February 24, 2026· Updated: Feb 25, 2026

7.5

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:13.4th

Official Description

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 due to nil pointer dereference and the SMF process terminates. This is triggered by a malformed PFCP SessionReportRequest on the SMF 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).

NVD Source

Technical Analysis

CVE-2026-25501 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

A proof-of-concept (PoC) exploit exists for CVE-2026-25501. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.