CVE-2025-69250
CVE-2025-69250 is a high-severity vulnerability in Free5gc Udm 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-20.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v4: 6.6
- EPSS exploit prediction: 0% (32nd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-207567
- Weakness: CWE-20
- Affected product: Free5gc Udm
- Published:
- Last modified:
Description
free5gc UDM provides Unified Data Management (UDM) for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, the service reliably leaks detailed internal error messages (e.g., strconv.ParseInt parsing errors) to remote clients when processing invalid pduSessionId inputs. This exposes implementation details and can be used for service fingerprinting. All deployments of free5GC using the UDM Nudm_UECM DELETE service may be vulnerable. free5gc/udm pull request 76 contains a fix for the issue. No direct workaround is available at the application level. Applying the official patch is recommended.
Frequently asked questions
- What is CVE-2025-69250?
- free5gc UDM provides Unified Data Management (UDM) for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, the service reliably leaks detailed internal error messages (e.g., strconv.ParseInt parsing errors) to remote clients when processing invalid pduSessionId inputs. This exposes implementation details and can be used for service fingerprinting. All deployments of free5GC using the UDM Nudm_UECM DELETE service may be vulnerable. free5gc/udm pull request 76 contains a fix for the issue. No direct workaround is available at the application level. Applying the official patch is recommended.
- How severe is CVE-2025-69250?
- CVE-2025-69250 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 high, integrity none, and availability none.
- Is CVE-2025-69250 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-69250?
- CVE-2025-69250 affects Free5gc Udm. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-69250?
- 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-2025-69250 have an EU (EUVD) identifier?
- Yes. CVE-2025-69250 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207567.
- When was CVE-2025-69250 published?
- CVE-2025-69250 was published on 2026-02-24 and last updated on 2026-06-17.
References
- https://github.com/free5gc/free5gc/issues/750
- https://github.com/free5gc/free5gc/security/advisories/GHSA-6w77-5pqh-83rm
- https://github.com/free5gc/udm/commit/504b14458d156558b3c0ade7107b86b3d5e72998
- https://github.com/free5gc/udm/pull/76
Affected products (1)
- cpe:2.3:a:free5gc:udm:*:*:*:*:*:go:*:*
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