CVE-2026-26025Public exploitNetwork attack vector

Process crash via unchecked missing URRID

Published Feb 24, 2026 · Updated Feb 24, 2026

NULL pointer dereference in free5GC SMF 1.4.1 and earlier allows remote attackers to crash the process with a malformed PFCP report. SMContext.HandleReports reads report.URRID.UrrIdValue without checking whether the mandatory URRID sub-IE exists in a USAR UsageReport. The attacker needs network access to UDP port 8805 and a valid session with an established UPF association; successful exploitation terminates session management for the 5G core.

CVSS severity7.5
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in free5GC SMF 1.4.1 and earlier allows remote attackers to crash the process with a malformed PFCP report. SMContext.HandleReports reads report.URRID.UrrIdValue without checking whether the mandatory URRID sub-IE exists in a USAR UsageReport. The attacker needs network access to UDP port 8805 and a valid session with an established UPF association; successful exploitation terminates session management for the 5G core.

The record

CVE
CVE-2026-26025
Published
Feb 24, 2026
Updated
Feb 24, 2026
Vendor
free5GC
Product
SMF
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 1.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

free5GC · SMFversion=<= 1.4.1

Published CVSS scores

6.6GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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