CVE-2023-37033: A Null pointer dereference vulnerability in the Mobile Management Entity (MME) in Magma <= 1.8.0 (fixed in v1.

Q: How do I fix CVE-2023-37033?

magma: upgrade to newer than 1.8.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-37033 being exploited?

CVE-2023-37033 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-37033 affect?

CVE-2023-37033 affects magma. Severity is medium (CVSS 6.5). A Null pointer dereference vulnerability in the Mobile Management Entity (MME) in Magma <= 1.8.0 (fixed in v1.9 commit 08472ba98b8321f802e95f5622fa90fec2dea486) allows network-adjacent attackers to crash the MME via an S1AP `Initial UE Mess

Q: How urgent is CVE-2023-37033?

Priority 41/100. Public exploit reference; On your watchlist

This month

MEDIUM 6.5WATCHLISTUPGRADE

CVE-2023-37033 is a medium-severity flaw (CVSS 6.5) affecting magma. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 66%)
CISA exploited list	No
Weakness	CWE-476
Published	2025-01-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: linuxfoundation

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-01-21 23:15 UTCPublished CVE record published
2026-06-17 06:07 UTCUpdated Record last modified

linuxfoundation magma UPGRADE

Affected: <= 1.8.0

Fixed in: newer than 1.8.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy magma || rpm -q magma || magma --version

2. UPGRADE to newer than 1.8.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade magma

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade magma

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-37033?

magma: upgrade to newer than 1.8.0. Exact commands for each OS are on this page.

Is CVE-2023-37033 being exploited?

CVE-2023-37033 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-37033 affect?

CVE-2023-37033 affects magma. Severity is medium (CVSS 6.5). A Null pointer dereference vulnerability in the Mobile Management Entity (MME) in Magma <= 1.8.0 (fixed in v1.9 commit 08472ba98b8321f802e95f5622fa90fec2dea486) allows network-adjacent attackers to crash the MME via an S1AP `Initial UE Mess

How urgent is CVE-2023-37033?

Priority 41/100. Public exploit reference; On your watchlist

Related CVEs

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References

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