CVE-2026-15720 - Vulnerability Details - OpenCVE

Description

In Open5GS through version 2.7.7 a pre-authentication heap out-of-bounds read in the AMF NAS 5GS mobile-identity handler may result in subscriber-wide denial of service.

Published: 2026-07-14

Score: 8.6 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

open5gs

open5gs

unaffected

Version	Status	Constraints
`0`	affected	≤ 2.7.7

No data.

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00371.

Exploitation poc

Automatable yes

Technical Impact partial

References

Link	Providers
https://github.com/open5gs/open5gs/security/advisories/GHSA-f4mx-3x6p-cfwp

History

Wed, 15 Jul 2026 14:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 14 Jul 2026 18:45:00 +0000

Type	Values Removed	Values Added
Description		In Open5GS through version 2.7.7 a pre-authentication heap out-of-bounds read in the AMF NAS 5GS mobile-identity handler may result in subscriber-wide denial of service.
Title		Pre-auth heap out-of-bounds read in the AMF NAS 5GS mobile-identity handler
Weaknesses		CWE-125
References		https://github.com/open5gs/open5gs/security/advisories/GHSA-f4mx-3x6p-cfwp
Metrics		cvssV3_1 `{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H'}`

Subscriptions

No data.

MITRE

Status: PUBLISHED

Assigner: redhat-cnalr

Published: 2026-07-14T18:20:22.732Z

Updated: 2026-07-15T14:02:22.116Z

Reserved: 2026-07-14T12:29:33.633Z

Link: CVE-2026-15720

Vulnrichment

Updated: 2026-07-15T14:02:18.910Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-125

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