How severe is CVE-2025-69247?

CVE-2025-69247 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-69247 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-69247?

CVE-2025-69247 affects Free5gc Go-upf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-69247?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-69247 have an EU (EUVD) identifier?

Yes. CVE-2025-69247 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207597.

When was CVE-2025-69247 published?

CVE-2025-69247 was published on 2026-02-23 and last updated on 2026-06-17.

CVE-2025-69247

CVE-2025-69247 is a high-severity vulnerability in Free5gc Go-upf with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-122.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 2.7
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-207597
Weakness: CWE-122
Affected product: Free5gc Go-upf
Published: 2026-02-23
Last modified: 2026-06-17

Description

free5GC go-upf is the User Plane Function (UPF) implementation for 5G networks that is part of the free5GC project. Versions prior to 1.2.8 have a Heap-based Buffer Overflow (CWE-122) vulnerability leading to Denial of Service. Remote attackers can crash the UPF network element by sending a specially crafted PFCP Session Modification Request with an invalid SDF Filter length field. This causes a heap buffer overflow, resulting in complete service disruption for all connected UEs and potential cascading failures affecting the SMF. All deployments of free5GC using the UPF component may be affected. Version 1.2.8 of go-upf contains a fix.

Frequently asked questions

What is CVE-2025-69247?: free5GC go-upf is the User Plane Function (UPF) implementation for 5G networks that is part of the free5GC project. Versions prior to 1.2.8 have a Heap-based Buffer Overflow (CWE-122) vulnerability leading to Denial of Service. Remote attackers can crash the UPF network element by sending a specially crafted PFCP Session Modification Request with an invalid SDF Filter length field. This causes a heap buffer overflow, resulting in complete service disruption for all connected UEs and potential cascading failures affecting the SMF. All deployments of free5GC using the UPF component may be affected. Version 1.2.8 of go-upf contains a fix.
How severe is CVE-2025-69247?: CVE-2025-69247 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-69247 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-69247?: CVE-2025-69247 affects Free5gc Go-upf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-69247?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-69247 have an EU (EUVD) identifier?: Yes. CVE-2025-69247 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207597.
When was CVE-2025-69247 published?: CVE-2025-69247 was published on 2026-02-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:free5gc:go-upf:*:*:*:*:*:go:*:*

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