How severe is CVE-2025-44952?

CVE-2025-44952 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-44952 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-44952?

CVE-2025-44952 affects Open5gs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-44952?

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-2025-44952 have an EU (EUVD) identifier?

Yes. CVE-2025-44952 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18654.

When was CVE-2025-44952 published?

CVE-2025-44952 was published on 2025-06-18 and last updated on 2026-06-17.

CVE-2025-44952

CVE-2025-44952 is a high-severity vulnerability in Open5gs with a CVSS 3.x base score of 7.8. 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18654
Weakness: CWE-120
Affected product: Open5gs
Published: 2025-06-18
Last modified: 2026-06-17

Description

A missing length check in `ogs_pfcp_subnet_add` function from PFCP library, used by both smf and upf in open5gs 2.7.2 and earlier, allows a local attacker to cause a Buffer Overflow by changing the `session.dnn` field with a value with length greater than 101.

Frequently asked questions

What is CVE-2025-44952?: A missing length check in `ogs_pfcp_subnet_add` function from PFCP library, used by both smf and upf in open5gs 2.7.2 and earlier, allows a local attacker to cause a Buffer Overflow by changing the `session.dnn` field with a value with length greater than 101.
How severe is CVE-2025-44952?: CVE-2025-44952 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-44952 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-44952?: CVE-2025-44952 affects Open5gs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-44952?: 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-2025-44952 have an EU (EUVD) identifier?: Yes. CVE-2025-44952 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18654.
When was CVE-2025-44952 published?: CVE-2025-44952 was published on 2025-06-18 and last updated on 2026-06-17.

References

Affected products (1)

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

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