CVE-2023-37012
CVE-2023-37012 is a medium-severity vulnerability in Open5gs with a CVSS 3.x base score of 5.3. 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: Medium (CVSS 3.x base score 5.3)
- EPSS exploit prediction: 0% (17th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2023-40932
- Weakness: CWE-617
- Affected product: Open5gs
- Published:
- Last modified:
Description
Open5GS MME versions <= 2.6.4 contain an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface. An attacker may send an `Initial UE Message` message missing a required `PLMN Identity` field to repeatedly crash the MME, resulting in denial of service.
Frequently asked questions
- What is CVE-2023-37012?
- Open5GS MME versions <= 2.6.4 contain an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface. An attacker may send an `Initial UE Message` message missing a required `PLMN Identity` field to repeatedly crash the MME, resulting in denial of service.
- How severe is CVE-2023-37012?
- CVE-2023-37012 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2023-37012 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-37012?
- CVE-2023-37012 affects Open5gs. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-37012?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2023-37012 have an EU (EUVD) identifier?
- Yes. CVE-2023-37012 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-40932.
- When was CVE-2023-37012 published?
- CVE-2023-37012 was published on 2025-01-22 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*
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