How severe is CVE-2026-7518?

CVE-2026-7518 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-7518 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-7518?

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

Does CVE-2026-7518 have an EU (EUVD) identifier?

Yes. CVE-2026-7518 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26466.

When was CVE-2026-7518 published?

CVE-2026-7518 was published on 2026-05-01 and last updated on 2026-06-17.

CVE-2026-7518

CVE-2026-7518 is a medium-severity vulnerability with a CVSS 3.x base score of 4.3. 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-404.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
CVSS v4: 2.1
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26466
Weakness: CWE-404
Published: 2026-05-01
Last modified: 2026-06-17

Description

A flaw has been found in Open5GS up to 2.7.7. This issue affects the function amf_namf_callback_handle_sdm_data_change_notify of the file /namf-callback/v1/{id}/sdmsubscription-notify of the component AMF SBI Endpoint. This manipulation of the argument changeItem.newValue causes denial of service. The attack can be initiated remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Frequently asked questions

What is CVE-2026-7518?: A flaw has been found in Open5GS up to 2.7.7. This issue affects the function amf_namf_callback_handle_sdm_data_change_notify of the file /namf-callback/v1/{id}/sdmsubscription-notify of the component AMF SBI Endpoint. This manipulation of the argument changeItem.newValue causes denial of service. The attack can be initiated remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
How severe is CVE-2026-7518?: CVE-2026-7518 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-7518 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-7518?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-7518 have an EU (EUVD) identifier?: Yes. CVE-2026-7518 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26466.
When was CVE-2026-7518 published?: CVE-2026-7518 was published on 2026-05-01 and last updated on 2026-06-17.

References

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