How severe is CVE-2026-44315?

CVE-2026-44315 has a CVSS 3.x base score of 9.4, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability high.

Is CVE-2026-44315 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44315?

CVE-2026-44315 affects Free5gc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44315?

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

Does CVE-2026-44315 have an EU (EUVD) identifier?

Yes. CVE-2026-44315 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32553.

When was CVE-2026-44315 published?

CVE-2026-44315 was published on 2026-05-27 and last updated on 2026-06-17.

CVE-2026-44315

CVE-2026-44315 is a critical-severity vulnerability in Free5gc with a CVSS 3.x base score of 9.4. 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-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.4)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-32553
Weakness: CWE-862
Affected product: Free5gc
Published: 2026-05-27
Last modified: 2026-06-17

Description

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the 3gpp-pfd-management API without inbound OAuth2/bearer-token authorization. A network attacker who can reach NEF on the SBI can create, read, and delete PFD-management transaction state with a forged or arbitrary bearer token (e.g. Authorization: Bearer not-a-real-token). The route group is also reachable even when the running config's ServiceList does not declare it, so operators who think they disabled the service via config are still exposed. This vulnerability is fixed in 4.2.2.

Frequently asked questions

What is CVE-2026-44315?: free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the 3gpp-pfd-management API without inbound OAuth2/bearer-token authorization. A network attacker who can reach NEF on the SBI can create, read, and delete PFD-management transaction state with a forged or arbitrary bearer token (e.g. Authorization: Bearer not-a-real-token). The route group is also reachable even when the running config's ServiceList does not declare it, so operators who think they disabled the service via config are still exposed. This vulnerability is fixed in 4.2.2.
How severe is CVE-2026-44315?: CVE-2026-44315 has a CVSS 3.x base score of 9.4, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability high.
Is CVE-2026-44315 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44315?: CVE-2026-44315 affects Free5gc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44315?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-44315 have an EU (EUVD) identifier?: Yes. CVE-2026-44315 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32553.
When was CVE-2026-44315 published?: CVE-2026-44315 was published on 2026-05-27 and last updated on 2026-06-17.

References

Affected products (1)

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

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