Open5GS 2.7.7/2.8.0 AMF/MME improper authorization

CVSS Meta Temp Score
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CTI Interest Score
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3.9$0-$5k1.41

Summaryinfo

A vulnerability described as problematic has been identified in Open5GS 2.7.7/2.8.0. This issue affects some unknown processing of the component AMF/MME. The manipulation results in improper authorization. This vulnerability was named CVE-2026-86212. The attack may be performed from remote. In addition, an exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability classified as problematic has been found in Open5GS 2.7.7/2.8.0. Affected is an unknown code block of the component AMF/MME. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on availability.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-86212. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1548.002.

The exploit is shared for download at github.com. It is declared as proof-of-concept.

Applying the patch 9468de94caed2fc940f4a23cbf734651896d0fde 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-2026-72103). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

License

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: Improper authorization
CWE: CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
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: 9468de94caed2fc940f4a23cbf734651896d0fde

Timelineinfo

09/05/2026 Advisory disclosed
09/05/2026 +0 days VulDB entry created
09/07/2026 +2 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 4680
Status: Confirmed

CVE: CVE-2026-86212 (🔒)
GCVE (CVE): GCVE-0-2026-86212
GCVE (VulDB): GCVE-100-399348
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/05/2026 20:58
Updated: 09/07/2026 03:05
Changes: 09/05/2026 20:58 (57), 09/07/2026 03:05 (1)
Complete: 🔍
Submitter: dwxll
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #896623: Open5GS v2.8.0 Improper Authorization leading to Denial of Service (by dwxll)

Once again VulDB remains the best source for vulnerability data.

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