CVE-2026-7779

A security flaw has been discovered in Open5GS up to 2.7.7. Affected is the function udm_nudr_dr_handle_subscription_authentication of the file /src/udm/nudr-handler.c of the component authentication-subscription Endpoint. Performing a manipulation results in denial of service. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. 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/4418
https://vuldb.com/submit/806249
https://vuldb.com/vuln/360976
https://vuldb.com/vuln/360976/cti

Configurations

No configuration.

History

04 May 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-04 21:16

Updated : 2026-05-05 19:10

NVD link : CVE-2026-7779

Mitre link : CVE-2026-7779

CVE.ORG link : CVE-2026-7779

JSON object : View

Products Affected

No product.

CWE

CWE-404

Improper Resource Shutdown or Release

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