How severe is CVE-2026-30653?

CVE-2026-30653 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-2026-30653 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30653?

CVE-2026-30653 affects Free5gc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30653?

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-2026-30653 have an EU (EUVD) identifier?

Yes. CVE-2026-30653 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14889.

When was CVE-2026-30653 published?

CVE-2026-30653 was published on 2026-03-24 and last updated on 2026-06-17.

CVE-2026-30653

CVE-2026-30653 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-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-14889
Weakness: CWE-400
Affected product: Free5gc
Published: 2026-03-24
Last modified: 2026-06-17

Description

An issue in Free5GC v.4.2.0 and before allows a remote attacker to cause a denial of service via the function HandleAuthenticationFailure of the component AMF

Frequently asked questions

What is CVE-2026-30653?: An issue in Free5GC v.4.2.0 and before allows a remote attacker to cause a denial of service via the function HandleAuthenticationFailure of the component AMF
How severe is CVE-2026-30653?: CVE-2026-30653 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-2026-30653 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30653?: CVE-2026-30653 affects Free5gc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30653?: 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-2026-30653 have an EU (EUVD) identifier?: Yes. CVE-2026-30653 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14889.
When was CVE-2026-30653 published?: CVE-2026-30653 was published on 2026-03-24 and last updated on 2026-06-17.

References

https://github.com/free5gc/free5gc/issues/826

Affected products (1)

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

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