How severe is CVE-2026-1684?

CVE-2026-1684 has a CVSS 3.x base score of 5.3, rated medium 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 low.

Is CVE-2026-1684 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-1684?

CVE-2026-1684 affects Free5gc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-1684?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-1684 have an EU (EUVD) identifier?

Yes. CVE-2026-1684 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5028.

When was CVE-2026-1684 published?

CVE-2026-1684 was published on 2026-01-30 and last updated on 2026-06-17.

CVE-2026-1684

CVE-2026-1684 is a medium-severity vulnerability in Free5gc with a CVSS 3.x base score of 5.3. 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-404.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
CVSS v4: 6.9
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5028
Weakness: CWE-404
Affected product: Free5gc
Published: 2026-01-30
Last modified: 2026-06-17

Description

A vulnerability was found in Free5GC SMF up to 4.1.0. Affected by this issue is the function HandleReports of the file /internal/context/pfcp_reports.go of the component PFCP UDP Endpoint. The manipulation results in denial of service. The attack can be executed remotely. It is advisable to implement a patch to correct this issue.

Frequently asked questions

What is CVE-2026-1684?: A vulnerability was found in Free5GC SMF up to 4.1.0. Affected by this issue is the function HandleReports of the file /internal/context/pfcp_reports.go of the component PFCP UDP Endpoint. The manipulation results in denial of service. The attack can be executed remotely. It is advisable to implement a patch to correct this issue.
How severe is CVE-2026-1684?: CVE-2026-1684 has a CVSS 3.x base score of 5.3, rated medium 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 low.
Is CVE-2026-1684 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-1684?: CVE-2026-1684 affects Free5gc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-1684?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-1684 have an EU (EUVD) identifier?: Yes. CVE-2026-1684 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5028.
When was CVE-2026-1684 published?: CVE-2026-1684 was published on 2026-01-30 and last updated on 2026-06-17.

References

Affected products (1)

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

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