How severe is CVE-2023-49391?

CVE-2023-49391 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-2023-49391 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-49391?

CVE-2023-49391 affects Free5gc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-49391?

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.

When was CVE-2023-49391 published?

CVE-2023-49391 was published on 2023-12-22 and last updated on 2026-06-17.

CVE-2023-49391

CVE-2023-49391 is a high-severity vulnerability in Free5gc 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-94.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Free5gc
Published: 2023-12-22
Last modified: 2026-06-17

Description

An issue was discovered in free5GC version 3.3.0, allows remote attackers to execute arbitrary code and cause a denial of service (DoS) on AMF component via crafted NGAP message.

Frequently asked questions

What is CVE-2023-49391?: An issue was discovered in free5GC version 3.3.0, allows remote attackers to execute arbitrary code and cause a denial of service (DoS) on AMF component via crafted NGAP message.
How severe is CVE-2023-49391?: CVE-2023-49391 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-2023-49391 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-49391?: CVE-2023-49391 affects Free5gc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-49391?: 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.
When was CVE-2023-49391 published?: CVE-2023-49391 was published on 2023-12-22 and last updated on 2026-06-17.

References

https://github.com/free5gc/free5gc/issues/497

Affected products (1)

cpe:2.3:a:free5gc:free5gc:3.3.0:*:*:*:*:*:*:*

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