# CVE-2025-52288: CVE-2025-52288

Status: published. Published: 2025-09-08. Updated: 2026-11-07.

Assertion failure in function ngap_build_downlink_nas_transport in file src/amf/ngap-build.c, the Access and Mobility Management Function (AMF) component, in Open5GS thru 2.7.5 allowing attackers to cause a denial of service or other unspecified impacts via repeated UE connect and disconnect message sequences.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: cve@mitre.org) — https://github.com/matejGradisar/open5gs/commit/5467da9763c300520f56bfbe0a7f5a7f980ec2f6

## Affected products and versions

- open5gs / open5gs: ≤ 2.7.5 (affected, custom). Source: NVD

## NVD configuration conditions

Affected CPE matches depend on the following AND/OR and negation conditions:

```json
[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*",
            "versionEndIncluding": "2.7.5",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  }
]
```

## Severity and prioritization

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H; source: NVD: 134c704f-9b21-4f2e-91b3-4a467353bcc0

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable no; technical impact partial; source NVD SSVC: 134c704f-9b21-4f2e-91b3-4a467353bcc0

- Weaknesses: CWE-400

## Exploit evidence

- exploit: https://github.com/open5gs/open5gs/issues/3862 (cve@mitre.org)
- exploit: https://github.com/open5gs/open5gs/issues/3862#issue-3006335547 (cve@mitre.org)

## References

- https://github.com/ZHENGHAOHELLO/BugReport/blob/main/CVE-2025-52288 (cve@mitre.org; Third Party Advisory)

- https://github.com/matejGradisar/open5gs/commit/5467da9763c300520f56bfbe0a7f5a7f980ec2f6 (cve@mitre.org; Patch)

- https://github.com/open5gs/open5gs/issues/3862 (cve@mitre.org; Exploit, Issue Tracking)

- https://github.com/open5gs/open5gs/issues/3862#issue-3006335547 (cve@mitre.org; Exploit, Issue Tracking)

- https://github.com/open5gs/open5gs/issues/3862#issuecomment-2853458783 (cve@mitre.org; Issue Tracking)

## Provenance

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-52288; retrieved 2026-11-07; source updated 2026-11-07

Revision: 521ae710a278efdcf8539ad42b5a73771325abba2e00fbb4d5b828e41c3f2f3e

Canonical: https://y2.dev/cve/CVE-2025-52288

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