CVE-2026-7535

What it is

A vulnerability was found in Open5GS up to 2.7.7. This affects the function amf_namf_comm_handle_registration_status_update_request in the library /lib/app/ogs-init.c of the file /namf-comm/v1/ue-contexts/{ueContextId}/transfer-update. Performing a manipulation of the argument ueContextId results in denial of service. The attack can be initiated remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

At a glance

Exploitability

Can be exploited over the network with a low-privilege account. Limited direct impact.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2026-05-01 01:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 11:02 UTC Last updatedMost recent change to the record

Details

Published

2026-05-01 01:16 UTC

Last modified

2026-06-17 11:02 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-404

Record status

Deferred

Attack profile CVSS 4.0 · 2.1

Attack vector

Network

Complexity

Low

Attack requirements

None

Privileges needed

Low

User interaction

None

Confidentiality

None

Integrity

None

Availability

Low