How severe is CVE-2025-70122?

CVE-2025-70122 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-2025-70122 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-70122?

CVE-2025-70122 affects Free5gc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-70122?

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-2025-70122 have an EU (EUVD) identifier?

Yes. CVE-2025-70122 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207534.

When was CVE-2025-70122 published?

CVE-2025-70122 was published on 2026-02-13 and last updated on 2026-06-17.

CVE-2025-70122

CVE-2025-70122 is a high-severity vulnerability in Free5gc 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)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-207534
Weakness: CWE-122
Affected product: Free5gc
Published: 2026-02-13
Last modified: 2026-06-17

Description

A heap buffer overflow vulnerability in the UPF component of free5GC v4.0.1 allows remote attackers to cause a denial of service via a crafted PFCP Session Modification Request. The issue occurs in the SDFFilterFields.UnmarshalBinary function (sdf-filter.go) when processing a declared length that exceeds the actual buffer capacity, leading to a runtime panic and UPF crash.

Frequently asked questions

What is CVE-2025-70122?: A heap buffer overflow vulnerability in the UPF component of free5GC v4.0.1 allows remote attackers to cause a denial of service via a crafted PFCP Session Modification Request. The issue occurs in the SDFFilterFields.UnmarshalBinary function (sdf-filter.go) when processing a declared length that exceeds the actual buffer capacity, leading to a runtime panic and UPF crash.
How severe is CVE-2025-70122?: CVE-2025-70122 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-2025-70122 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-70122?: CVE-2025-70122 affects Free5gc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-70122?: 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-2025-70122 have an EU (EUVD) identifier?: Yes. CVE-2025-70122 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207534.
When was CVE-2025-70122 published?: CVE-2025-70122 was published on 2026-02-13 and last updated on 2026-06-17.

References

https://github.com/free5gc/free5gc/issues/746

Affected products (1)

cpe:2.3:a:free5gc:free5gc:4.0.1:*:*:*:*:*:*:*

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