How severe is CVE-2023-37029?

CVE-2023-37029 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 none, integrity none, and availability high.

Is CVE-2023-37029 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-37029?

CVE-2023-37029 affects Linuxfoundation Magma. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-37029?

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-2023-37029 have an EU (EUVD) identifier?

Yes. CVE-2023-37029 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-40949.

When was CVE-2023-37029 published?

CVE-2023-37029 was published on 2025-01-21 and last updated on 2026-06-17.

CVE-2023-37029

Q: What is CVE-2023-37029?

Magma versions <= 1.8.0 (fixed in v1.9 commit 08472ba98b8321f802e95f5622fa90fec2dea486) are susceptible to an assertion-based crash when an oversized NAS packet is received. An attacker may leverage this behavior to repeatedly crash the MME via either a compromised base station or via an unauthenticated cellphone within range of a base station managed by the MME, causing a denial of service.

CVE-2023-37029 is a high-severity vulnerability in Linuxfoundation Magma 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-617.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-40949
Weakness: CWE-617
Affected product: Linuxfoundation Magma
Published: 2025-01-21
Last modified: 2026-06-17

Description

Magma versions <= 1.8.0 (fixed in v1.9 commit 08472ba98b8321f802e95f5622fa90fec2dea486) are susceptible to an assertion-based crash when an oversized NAS packet is received. An attacker may leverage this behavior to repeatedly crash the MME via either a compromised base station or via an unauthenticated cellphone within range of a base station managed by the MME, causing a denial of service.

Frequently asked questions

What is CVE-2023-37029?: Magma versions <= 1.8.0 (fixed in v1.9 commit 08472ba98b8321f802e95f5622fa90fec2dea486) are susceptible to an assertion-based crash when an oversized NAS packet is received. An attacker may leverage this behavior to repeatedly crash the MME via either a compromised base station or via an unauthenticated cellphone within range of a base station managed by the MME, causing a denial of service.
How severe is CVE-2023-37029?: CVE-2023-37029 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 none, integrity none, and availability high.
Is CVE-2023-37029 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-37029?: CVE-2023-37029 affects Linuxfoundation Magma. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-37029?: 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-2023-37029 have an EU (EUVD) identifier?: Yes. CVE-2023-37029 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-40949.
When was CVE-2023-37029 published?: CVE-2023-37029 was published on 2025-01-21 and last updated on 2026-06-17.

References

https://cellularsecurity.org/ransacked

Affected products (1)

cpe:2.3:a:linuxfoundation:magma:*:*:*:*:*:*:*:*

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