How severe is CVE-2025-65565?

CVE-2025-65565 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-2025-65565 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-65565?

CVE-2025-65565 affects Opennetworking Upf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-65565?

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-2025-65565 have an EU (EUVD) identifier?

Yes. CVE-2025-65565 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204375.

When was CVE-2025-65565 published?

CVE-2025-65565 was published on 2025-12-18 and last updated on 2026-06-17.

CVE-2025-65565

CVE-2025-65565 is a high-severity vulnerability in Opennetworking 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-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204375
Weakness: CWE-476
Affected product: Opennetworking Upf
Published: 2025-12-18
Last modified: 2026-06-17

Description

A denial-of-service vulnerability exists in the omec-project UPF (pfcpiface component) in version upf-epc-pfcpiface:2.1.3-dev. After PFCP association is established, a PFCP Session Establishment Request that is missing the mandatory F-SEID (CPF-SEID) Information Element is not properly validated. The session establishment handler calls IE.FSEID() on a nil pointer, which triggers a panic and terminates the UPF process. An attacker who can send PFCP Session Establishment Request messages to the UPF's N4/PFCP endpoint can exploit this issue to repeatedly crash the UPF and disrupt user-plane services.

Frequently asked questions

What is CVE-2025-65565?: A denial-of-service vulnerability exists in the omec-project UPF (pfcpiface component) in version upf-epc-pfcpiface:2.1.3-dev. After PFCP association is established, a PFCP Session Establishment Request that is missing the mandatory F-SEID (CPF-SEID) Information Element is not properly validated. The session establishment handler calls IE.FSEID() on a nil pointer, which triggers a panic and terminates the UPF process. An attacker who can send PFCP Session Establishment Request messages to the UPF's N4/PFCP endpoint can exploit this issue to repeatedly crash the UPF and disrupt user-plane services.
How severe is CVE-2025-65565?: CVE-2025-65565 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-2025-65565 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-65565?: CVE-2025-65565 affects Opennetworking Upf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-65565?: 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-2025-65565 have an EU (EUVD) identifier?: Yes. CVE-2025-65565 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204375.
When was CVE-2025-65565 published?: CVE-2025-65565 was published on 2025-12-18 and last updated on 2026-06-17.

References

https://github.com/omec-project/upf/issues/957

Affected products (1)

cpe:2.3:a:opennetworking:upf:2.1.3:dev:*:*:*:*:*:*

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