How severe is CVE-2025-29339?

CVE-2025-29339 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-2025-29339 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-29339?

CVE-2025-29339 affects Open5gs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-29339?

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-2025-29339 have an EU (EUVD) identifier?

Yes. CVE-2025-29339 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12214.

When was CVE-2025-29339 published?

CVE-2025-29339 was published on 2025-04-22 and last updated on 2026-06-17.

CVE-2025-29339

CVE-2025-29339 is a high-severity vulnerability in Open5gs 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-617.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12214
Weakness: CWE-617
Affected product: Open5gs
Published: 2025-04-22
Last modified: 2026-06-17

Description

An issue in UPF in Open5GS UPF versions up to v2.7.2 results an assertion failure vulnerability in PFCP session parameter validation. When processing a PFCP Session Establishment Request with PDN Type=0, the UPF fails to handle the invalid value propagated from SMF (or via direct attack), triggering a fatal assertion check and causing a daemon crash.

Frequently asked questions

What is CVE-2025-29339?: An issue in UPF in Open5GS UPF versions up to v2.7.2 results an assertion failure vulnerability in PFCP session parameter validation. When processing a PFCP Session Establishment Request with PDN Type=0, the UPF fails to handle the invalid value propagated from SMF (or via direct attack), triggering a fatal assertion check and causing a daemon crash.
How severe is CVE-2025-29339?: CVE-2025-29339 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-2025-29339 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-29339?: CVE-2025-29339 affects Open5gs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-29339?: 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-2025-29339 have an EU (EUVD) identifier?: Yes. CVE-2025-29339 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12214.
When was CVE-2025-29339 published?: CVE-2025-29339 was published on 2025-04-22 and last updated on 2026-06-17.

References

https://github.com/open5gs/open5gs/issues/3727

Affected products (1)

cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*

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