CVE-2026-7535 Details
Description
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.
A denial-of-service vulnerability exists in Open5GS versions through 2.7.7 within the AMF component. The issue arises in the 'amf_namf_comm_handle_registration_status_update_request' function, located in the 'lib/app/ogs-init.c' file. When the 'ueContextId' argument is manipulated, it leads to a segmentation fault by dereferencing a null pointer, causing the AMF process to crash. This vulnerability is remotely exploitable via the Namf_Communication SBI interface.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 1, 2026CISA-ADP
Assessed May 4, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/open5gs/open5gs/ | [email protected] | Vendor |
| https://github.com/open5gs/open5gs/issues/4399 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://vuldb.com/submit/804291 | [email protected] | Permission Required |
| https://vuldb.com/submit/804303 | [email protected] | Permission Required |
| https://vuldb.com/vuln/360352 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/360352/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-404 | Improper Resource Shutdown or Release | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Open5GS | <= 2.7.7 (semver) |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 1, 2026 | New CVE Received | [email protected] |