How severe is CVE-2023-37039?

CVE-2023-37039 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-37039 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-37039?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-37039 have an EU (EUVD) identifier?

Yes. CVE-2023-37039 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-40959.

When was CVE-2023-37039 published?

CVE-2023-37039 was published on 2025-01-22 and last updated on 2026-06-17.

CVE-2023-37039

CVE-2023-37039 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. 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-476.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-40959
Weakness: CWE-476
Published: 2025-01-22
Last modified: 2026-06-17

Description

A Null pointer dereference vulnerability in the Mobile Management Entity (MME) in Magma <= 1.8.0 (fixed in v1.9 commit 08472ba98b8321f802e95f5622fa90fec2dea486) allow network-adjacent attackers to crash the MME via an S1AP `Initial UE Message` packet missing an expected `RRC Establishment Clause` field.

Frequently asked questions

What is CVE-2023-37039?: A Null pointer dereference vulnerability in the Mobile Management Entity (MME) in Magma <= 1.8.0 (fixed in v1.9 commit 08472ba98b8321f802e95f5622fa90fec2dea486) allow network-adjacent attackers to crash the MME via an S1AP `Initial UE Message` packet missing an expected `RRC Establishment Clause` field.
How severe is CVE-2023-37039?: CVE-2023-37039 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-37039 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-37039?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-37039 have an EU (EUVD) identifier?: Yes. CVE-2023-37039 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-40959.
When was CVE-2023-37039 published?: CVE-2023-37039 was published on 2025-01-22 and last updated on 2026-06-17.

References

https://cellularsecurity.org/ransacked

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