Open5GS up to 2.7.7 authentication-subscription Endpoint /src/udm/nudr-handler.c udm_nudr_dr_handle_subscription_authentication denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.9$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Open5GS up to 2.7.7. Affected by this vulnerability is the function udm_nudr_dr_handle_subscription_authentication of the file /src/udm/nudr-handler.c of the component authentication-subscription Endpoint. Executing a manipulation can lead to denial of service. This vulnerability is handled as CVE-2026-7779. The attack can be executed remotely. Additionally, an exploit exists. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability has been found in Open5GS up to 2.7.7 and classified as problematic. This vulnerability affects the function udm_nudr_dr_handle_subscription_authentication of the file /src/udm/nudr-handler.c of the component authentication-subscription Endpoint. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-7779. The exploitation appears to be easy. The attack can be initiated remotely. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1499.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-27143). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/04/2026 Advisory disclosed
05/04/2026 +0 days VulDB entry created
05/05/2026 +1 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 4418
Status: Not defined

CVE: CVE-2026-7779 (🔒)
GCVE (CVE): GCVE-0-2026-7779
GCVE (VulDB): GCVE-100-360976
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/04/2026 17:55
Updated: 05/05/2026 02:35
Changes: 05/04/2026 17:55 (57), 05/05/2026 02:35 (1)
Complete: 🔍
Submitter: FrankyLin
Cache ID: 216::103

Submitinfo

Accepted

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