CVE-2026-7781

A security vulnerability has been detected in Open5GS up to 2.7.7. Affected by this issue is the function udm_nudm_uecm_handle_amf_registration_update of the file /src/udm/nudm-handler.c of the component amf-3gpp-access Endpoint. The manipulation leads to denial of service. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS v3 4.3 MEDIUM
CVSS v2.0 4.0 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:N/I:N/A:P

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/open5gs/open5gs/
https://github.com/open5gs/open5gs/issues/4420
https://vuldb.com/submit/806251
https://vuldb.com/vuln/360978
https://vuldb.com/vuln/360978/cti

Configurations

No configuration.

History

04 May 2026, 23:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-04 23:16

Updated : 2026-05-05 19:10

NVD link : CVE-2026-7781

Mitre link : CVE-2026-7781

CVE.ORG link : CVE-2026-7781

JSON object : View

Products Affected

No product.

CWE

CWE-404

Improper Resource Shutdown or Release

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