Open5GS up to 2.7.6 NGAP PathSwitchRequest Message src/amf/ngap-handler.c improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Open5GS up to 2.7.6. Affected is an unknown function of the file src/amf/ngap-handler.c of the component NGAP PathSwitchRequest Message Handler. The manipulation results in improper authentication. This vulnerability is known as CVE-2026-10157. It is possible to launch the attack remotely. Furthermore, an exploit is available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in Open5GS up to 2.7.6. Affected is an unknown functionality of the file src/amf/ngap-handler.c of the component NGAP PathSwitchRequest Message Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published by Seungjoon Na and Jinha Kim with Kookmin University ICSR Lab as 4393. The advisory is available at github.com. This vulnerability is traded as CVE-2026-10157. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

A public exploit has been developed by Seungjoon Na/Jinha Kim. The exploit is shared for download at github.com. It is declared as proof-of-concept.

Applying the patch a188e36b1741ffc2252133f59b1bda4f14d3cb5c is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-33476). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
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: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Author: Seungjoon Na/Jinha Kim
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: a188e36b1741ffc2252133f59b1bda4f14d3cb5c

Timelineinfo

05/30/2026 Advisory disclosed
05/30/2026 +0 days VulDB entry created
06/01/2026 +2 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 4393
Researcher: Seungjoon Na, Jinha Kim
Organization: Kookmin University ICSR Lab
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-10157 (🔒)
GCVE (CVE): GCVE-0-2026-10157
GCVE (VulDB): GCVE-100-367410
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/30/2026 08:10
Updated: 06/01/2026 15:19
Changes: 05/30/2026 08:10 (59), 05/31/2026 05:56 (1), 06/01/2026 07:45 (3), 06/01/2026 15:19 (3)
Complete: 🔍
Submitter: Seungjoon Na
Committer: Seungjoon Na
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #818939: open5gs Open5GS v2.7.6 Improper Authentication (by Seungjoon Na)

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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